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mondofacto - Online Medical Dictionary Category: Health and Medicine > Medical Dictionary Date & country: 26/01/2008, UK Words: 116197

heartily
1. From the heart; with all the heart; with sincerity. 'I heartily forgive them.' (Shak) ... 2. With zeal; actively; vigorously; willingly; cordially; as, he heartily assisted the prince. To eat heartily, to eat freely and with relish. ... Synonym: Sincerely, cordially, zealously, vigorously, actively, warmly, eagerly, ardently, earnestly. ... Origin: …

heartless
1. Without a heart. 'You have left me heartess; mine is in your bosom.' (J. Webster) ... 2. Destitute of courage; spiritless; despodent. 'Heartless they fought, and quitted soon their ground.' (Dryden) 'Heartless and melancholy.' (W. Irwing) ... 3. Destitute of feeling or affection; unsympathetic; cruel. 'The heartless parasites.' Heart'lessly, Heart …

heartwater
An acute febrile disease of cattle, sheep, and goats in sub-Saharan Africa and certain islands in the Indian and Atlantic Oceans and in the Caribbean, caused by the rickettsial organism Cowdria ruminantium and transmitted by ticks of the genus Amblyomma; some species of African antelope and European and American deer also are susceptible. ... Synony …

heartwater disease
A tick-borne septicaemic disease of ruminants caused by cowdria ruminantium. ... (12 Dec 1998) ...

heartworm
Synonym for dirofilaria immitis ... A filarial parasite primarily of dogs but occurring also in foxes, wolves, and humans. The parasite is transmitted by mosquitoes. ... (12 Dec 1998) ...

hearty
1. Pertaining to, or proceeding from, the heart; warm; cordial; bold; zealous; sincere; willing; also, energetic; active; eager; as, a hearty welcome; hearty in supporting the government. 'Full of hearty tears For our good father's loss.' (Marston) ... 2. Exhibiting strength; sound; healthy; firm; not weak; as, a hearty timber. ... 3. Promoting stren …

heat
<chemistry> Energy transferred between two objects because of a temperature difference, the thermal motion of atoms and molecules. For chemical systems the sign for heat flow into the system is positive, because this process increases the internal energy of the system. Heat flowing out of the system is defined to be negative, since this proce …

heat apoplexy
Synonym for heatstroke ... A severe and often fatal illness produced by exposure to excessively high temperatures, especially when accompanied by marked exertion. ... It can manifest by elevated body temperature, lack of sweating, hot dry skin, and neurologic symptoms; unconsciousness, paralysis, headache, vertigo, confusion. In severe cases very hig …

heat capacity
<chemistry> The amount of energy required to raise the temperature of an object by one degree Celsius (or Kelvin), it is represented by the symbol C and is given in units of J/K. ... (09 Jan 1998) ...

heat coagulation test
A test for measurement of protein in urine; albumin and globulin are coagulated by heat at an acid pH, and the amount of turbidity present provides a qualitative estimation of the degree of proteinuria. ... (05 Mar 2000) ...

heat cramp
A form of heat illness that results from profuse sweating and loss of body salts (sodium). Heat cramps are manifest by painful spasms of abdominal and skeletal muscles. ... (27 Sep 1997) ...

heat cramps
Muscle spasms induced by severe exertion in intense heat, accompanied by considerable pain; sometimes related to salt deficiency, hyperventilation, or overindulgence in alcohol. ... Synonym: myalgia thermica. ... (05 Mar 2000) ...

heat exhaustion
A form of heat illness that results when the victim is dehydrated (fluid depleted). ... Common symptoms include: fatigue, lightheadedness, nausea, vomiting, headache, rapid heartbeat and lowered blood pressure. ... (27 Sep 1997) ...

heat hyperpyrexia
Synonym for heatstroke ... A severe and often fatal illness produced by exposure to excessively high temperatures, especially when accompanied by marked exertion. ... It can manifest by elevated body temperature, lack of sweating, hot dry skin, and neurologic symptoms; unconsciousness, paralysis, headache, vertigo, confusion. In severe cases very hig …

heat illness
A general term which describes three forms of heat related injury: heat cramps, heat exhaustion and heatstroke. ... (27 Sep 1997) ...

heat instability test
A test for the presence of unstable haemoglobins; fresh red blood cells lysed in distilled water develop a precipitate within one hour at 50°C if unstable haemoglobin is present. ... (05 Mar 2000) ...

heat lamp
A lamp that emits infrared light and produces heat; used to apply topical heat to the skin. ... Synonym: thermolamp. ... (05 Mar 2000) ...

heat oedema
Oedema caused by excessively high external temperature. ... (05 Mar 2000) ...

heat of combustion
The quantity of heat liberated per gram-molecular weight when a substance undergoes complete oxidation. ... (05 Mar 2000) ...

heat of compression
Heat produced when a gas is compressed. ... (05 Mar 2000) ...

heat of crystallization
The quantity of heat liberated or absorbed per mol when a substance passes into the crystalline state. ... (05 Mar 2000) ...

heat of dissociation
The heat (expressed in calories or joules) expended in the dissociation of 1 mol of a substance into specified products. ... (05 Mar 2000) ...

heat of evaporation
The heat absorbed in the evaporation of water, sweat or other liquid; for water it amounts to 540 cal/g at 100°C. ... Synonym: heat of vaporization. ... (05 Mar 2000) ...

heat of formation
The heat (expressed in calories or joules) absorbed or liberated during the (hypothetical) reaction in which a mole of a compound is formed from the necessary elements, in elemental form. ... (05 Mar 2000) ...

heat of fusion
<chemistry> The enthalpy change that occurs to melt a solid at its melting point. ... (09 Jan 1998) ...

heat of hydration
<chemistry> The enthalpy change associated with placing gaseous molecules or ions in water. ... (09 Jan 1998) ...

heat of solution
<chemistry> The enthalpy change associated with dissolving a solute in a solvent. ... (09 Jan 1998) ...

heat of vaporization
<chemistry> The energy required to vaporise one mole of a liquid at a pressure of one atmosphere. ... (09 Jan 1998) ...

heat prostration
Synonym for heat exhaustion ... A form of heat illness that results when the victim is dehydrated (fluid depleted). ... Common symptoms include: fatigue, lightheadedness, nausea, vomiting, headache, rapid heartbeat and lowered blood pressure. ... (27 Sep 1997) ...

heat rash
Synonym for miliaria rubra ... An eruption of papules and vesicles at the orifices of sweat glands, accompanied by redness and inflammatory reaction of the skin. ... Synonym: heat rash, lichen infantum, lichen strophulosus, prickly heat, strophulus, summer rash, tropical lichen, lichen tropicus, wildfire rash. ... (05 Mar 2000) ...

heat rate
The amount of fuel energy required by a power plant to produce one kilowatt-hour of electrical output. A measure of generating station thermal efficiency, generally expressed in Btu per net kWh. It is computed by dividing the total Btu content of fuel burned for electric generation by the resulting net kWh generation. ... (05 Dec 1998) ...

heat rigor
Coagulation of muscle protein induced by heat. ... (05 Mar 2000) ...

heat stress disorder
A group of conditions due to overexposure to or overexertion in excess environmental temperature. ... It includes heat cramps, which are non-emergent and treated by salt replacement; heat exhaustion, which is more serious, treated with fluid and salt replacement; and heatstroke, a condition most commonly affecting extremes of age, especially the eld …

heat treatment
In dentistry, a method of controlled temperature handling of metals so as to change the microscopic structure and thus the physical properties. ... See: temper, anneal. ... (05 Mar 2000) ...

heat urticaria
Synonym for cholinergic urticaria ... A form of physical or non-allergic urticaria initiated by heat (e.g., hot baths, physical exercise, pyrexia, exposure to sun or to a warm room) or by excitement; the rather distinctive lesions consist of pruritic areas 1 to 2 mm in diameter surrounded by bright red macules. ... Synonym: heat urticaria. ... (05 Mar …

heat-curing resin
Resin that requires heat to initiate polymerization. ... (05 Mar 2000) ...

heat-labile
Destroyed or altered by heat. ... (05 Mar 2000) ...

heat-rigor point
<cell biology> The degree of elevated temperature at which coagulation of protoplasm occurs with death of the cell. ... (05 Mar 2000) ...

heat-shock factor
Synonym for heat-shock proteins 70 ... <cell biology, protein> A class of molecular chaperones found in both prokaryotes and in several compartments of eukaryotic cells. There is evidence that these proteins can interact with polypeptides during a variety of assembly processes in such a way as to prevent the formation of nonfunctional structur …

heat-shock gene
<molecular biology> A set of genes present in most animals which are transcribed suddenly, quickly, and with coordination when the animal is exposed to certain types of stress such as a sudden temperature increase. ... (09 Oct 1997) ...

heat-shock protein
<cell biology, molecular biology, protein> Families of proteins conserved through prokaryotic and eukaryotic cells and bacteria in response to hyperthermia and other environmental stresses, although some are constitutively expressed. They increase thermal tolerance and perform functions essential to cell survival under these conditions. ... So …

heat-shock protein 27 kinase
<enzyme> Phosphorylates hsp 26 on serine residues when stimulated by tumour necrosis factor or interleukin 1 ... Registry number: EC 2.7.1.- ... Synonym: hsp 27 kinase, heat-shock protein 27 kinase, hsp27 kinase ... (26 Jun 1999) ...

heat-shock proteins 70
<cell biology, protein> A class of molecular chaperones found in both prokaryotes and in several compartments of eukaryotic cells. There is evidence that these proteins can interact with polypeptides during a variety of assembly processes in such a way as to prevent the formation of nonfunctional structures. ... (12 Dec 1998) ...

heat-shock proteins 90
<cell biology, protein> A class of molecular chaperones whose members act in the mechanism of signal transduction by steroid receptors. ... (12 Dec 1998) ...

heat-shock response
<cell biology> A constellation of responses that occur when an organism is exposed to excessive heat and other environmental stresses. Responses include synthesis of some proteins, repression of other proteins, and expression of new proteins. ... (12 Dec 1998) ...

heat-shock response element
<cell biology, protein> The nucleotide sequence, CNNGAANNTCCNG, which is in the promoter region of the heat-shock genes. When the animal is exposed to certain types of stress such as a sudden rise in temperature, the first thing that happens to activate these genes is the binding of the HSE by a transcriptional enhancer protein. ... (09 Oct 19 …

heat-stable
Synonym for thermostabile ... Thermostable ... Not readily subject to alteration or destruction by heat. ... Synonym: heat-stable. ... Origin: thermo-+ L. Stabilis, stable ... (05 Mar 2000) ...

heat-stable enzyme
Synonym for thermostable enzyme ... <enzyme> An enzyme that is not readily subject to destruction or alteration by heat. ... Synonym: heat-stable enzyme. ... (05 Mar 2000) ...

heath
1. <botany> A low shrub (Erica, or Calluna, vulgaris), with minute evergreen leaves, and handsome clusters of pink flowers. It is used in Great Britain for brooms, thatch, beds for the poor, and for heating ovens. It is also called heather, and ling. Also, any species of the genus Erica, of which several are European, and many more are South …

Heath-Edwards grades
A system that describes the pathology of hypertensive pulmonary vascular disease. ... (05 Mar 2000) ...

heathen
Origin: OE. Hethen, AS. Hen, prop. An adj. Fr. H heath, and orig, therefore, one who lives in the country or on the heaths and in the woods (cf. Pagan, fr. Pagus village); akin to OS. Hin, adj, D. Heiden a heathen, G. Heide, OHG. Heidan, Icel. Heiinn, adj, Sw. Heden, Goth. Haipn, fem. See Heath, and cf. Hoiden. ... 1. An individual of the pagan or u …

heating
That heats or imparts heat; promoting warmth or heat; exciting action; stimulating; as, heating medicines or applications. Heating surface, the aggregate surface exposed to fire or to the heated products of combustion, especially. Of all the plates or sheets that are exposed to water on their opposite surfaces. ... Synonym: fire surface. ... Source: …

heating curve
<chemistry> A plot of temperature verses time for a substance where energy is added at a constant rate. ... (09 Jan 1998) ...

heating value
The maximum amount of energy that is available from burning a substance. ... (05 Dec 1998) ...

heatstroke
A severe and often fatal illness produced by exposure to excessively high temperatures, especially when accompanied by marked exertion. ... It can manifest by elevated body temperature, lack of sweating, hot dry skin, and neurologic symptoms; unconsciousness, paralysis, headache, vertigo, confusion. In severe cases very high fever, vascular collapse …

heave
1. To cause to move upward or onward by a lifting effort; to lift; to raise; to hoist; often with up; as, the wave heaved the boat on land. ... Heave, as now used, implies that the thing raised is heavy or hard to move; but formerly it was used in a less restricted sense. ... 2. To throw; to cast; obsolete, provincial, or colloquial, except in certai …

heaven
1. The expanse of space surrounding the earth; especially, that which seems to be over the earth like a great arch or dome; the firmament; the sky; the place where the sun, moon, and stars appear; often used in the plural in this sense. 'I never saw the heavens so dim by day.' (Shak) 'When my eyes shall be turned to behold for the last time the sun …

heavy
1. Heaved or lifted with labour; not light; weighty; ponderous; as, a heavy stone; hence, sometimes, large in extent, quantity, or effects; as, a heavy fall of rain or snow; a heavy failure; heavy business transactions, etc.; often implying strength; as, a heavy barrier; also, difficult to move; as, a heavy draught. ... 2. Not easy to bear; burdenso …

heavy chain
<protein> In general, the larger polypeptide in a multimeric protein. Thus the immunoglobulin heavy chain is of 50 kD, the light chain of 22 kD, whereas in myosin the heavy chain is very much larger (220 kD) than the light chains (~20 kD). ... (18 Nov 1997) ...

heavy chain disease
A disorder of immunoglobulin synthesis in which large quantities of abnormal heavy chains are excreted in the urine. The amino acid sequences of the n- (amino-) terminal regions of these chains are normal, but they have a deletion extending from part of the variable domain through the first domain of the constant region, so that they cannot form cr …

heavy hydrogen
<radiobiology> Somewhat informal alternative name for deuterium. ... See: deuterium. ... (10 Jan 1998) ...

Heavy Ion Beams
<radiobiology> Particle beams using heavy (as opposed to light) ions. These can be used for inertial confinement fusion research. ... (10 Jan 1998) ...

heavy liquid petrolatum
Synonym for mineral oil ... <chemical> A mixture of liquid hydrocarbons obtained from petroleum. It is used as laxative, lubricant, ointment base, and emollient. ... Pharmacological action: cathartic, emollients, ointment bases. ... Chemical name: Hydrocarbon oils ... (12 Dec 1998) ...

heavy metal
A metal with a high specific gravity, typically larger than 5; e.g., Fe, Co, Cu, Mn, Mo, Zn, V. ... (05 Mar 2000) ...

heavy metal neuropathy
Peripheral nervous system disorders attributed to intoxication of one of the heavy metals: arsenic, gold, lead, mercury, platinum and thallium. ... (05 Mar 2000) ...

heavy nitrogen
Synonym for nitrogen-15 ... The less common stable nitrogen isotope, making up 0.37% of natural nitrogen. ... Synonym: heavy nitrogen. ... (05 Mar 2000) ...

heavy oxygen
Synonym for oxygen-18 ... A stable oxygen isotope making up 0.20% of natural oxygen; used in mass spectrometry and in NMR studies of tissue. ... Synonym: heavy oxygen. ... (05 Mar 2000) ...

heavy water
most commonly used by cell biologists to stabilise microtubules. ... (18 Nov 1997) ...

hebdomadal
Synonym for hebdomadary ... A member of a chapter or convent, whose week it is to officiate in the choir, and perform other services, which, on extraordinary occasions, are performed by the superiors. ... Origin: LL. Hebdomadarius: cf. F. Hebdomadier. ... Consisting of seven days, or occurring at intervals of seven days; weekly. ... Origin: L. Hebdomad …

hebdomadary
A member of a chapter or convent, whose week it is to officiate in the choir, and perform other services, which, on extraordinary occasions, are performed by the superiors. ... Origin: LL. Hebdomadarius: cf. F. Hebdomadier. ... Consisting of seven days, or occurring at intervals of seven days; weekly. ... Origin: L. Hebdomadalis, LL. Hebdomadarius: cf …

Hebeloma
A genus of mushrooms that is a source of gastrointestinal toxins. ... (05 Mar 2000) ...

hebephrenia
A syndrome characterised by shallow and inappropriate affect, giggling, and silly, regressive behaviour and mannerisms; a subtype of schizophrenia now renamed disorganised schizophrenia. ... Origin: G. Hebe, puberty, + phren, the mind ... (05 Mar 2000) ...

hebephrenic
Relating to or characterised by hebephrenia. ... (05 Mar 2000) ...

hebephrenic schizophrenia
Synonym for disorganised schizophrenia ... A severe form of schizophrenia characterised by the predominance of incoherence, blunted, inappropriate or silly affect, and the absence of systematised delusions. ... Synonym: hebephrenic schizophrenia. ... (05 Mar 2000) ...

Heberden, William
<person> English physician, 1710-1801. ... See: Heberden's angina, Heberden's nodes, Heberden's nodosities, Rougnon-Heberden disease. ... (05 Mar 2000) ...

Heberden's angina
Synonym for angina pectoris ... A paroxysmal thoracic pain, with a failing of suffocation and impending death, due, most often, to anoxia of the myocardium and precipitated by effort or excitement. ... (18 Nov 1997) ...

Heberden's nodes
Exostoses about the size of a pea or smaller, found on the terminal phalanges of the fingers in osteoarthritis, which are enlargements of the tubercles at the articular extremities of the distal phalanges. ... Synonym: Heberden's nodosities, Rosenbach's disease, tuberculum arthriticum. ... (05 Mar 2000) ...

Heberden's nodosities
Synonym for Heberden's nodes ... Exostoses about the size of a pea or smaller, found on the terminal phalanges of the fingers in osteoarthritis, which are enlargements of the tubercles at the articular extremities of the distal phalanges. ... Synonym: Heberden's nodosities, Rosenbach's disease, tuberculum arthriticum. ... (05 Mar 2000) ...

hebetic
Pertaining to youth. ... Origin: G. Hebetikos, youthful, fr. Hebe, youth ... (05 Mar 2000) ...

hebetude
Synonym: moria. ... Origin: L. Hebetudo, fr. Hebeo, to be dull ... (05 Mar 2000) ...

hebiatrics
Synonym: adolescent medicine. ... Origin: G. Hebe, youth, + iatrikos, relating to medicine ... (05 Mar 2000) ...

Hebra
Ferdinand von, Austrian dermatologist, 1816-1880. ... See: Hebra's disease, Hebra's prurigo. ... (05 Mar 2000) ...

Hebra's disease
Synonym for erythema multiforme ... <dermatology> A rash that results from an allergic response, most often secondary to a drug. The rash is described as pink-red macules (flat), that may have clear centres (iris lesions) or appear as a dusky violet colour. ... Erythema multiforme most often results from reactions to sulpha drugs, penicillin's, …

Hebra's prurigo
A severe form of chronic dermatitis with secondary infection in which there are constantly recurring, intensely itchy papules and nodules, often associated with atopy. ... Synonym: prurigo agria, prurigo ferox. ... (05 Mar 2000) ...

hebrides
A group of islands in the atlantic ocean west of scotland, comprising the outer hebrides and the inner hebrides. They were the scene of frequent incursions of scandinavian settlers from the 6th century a.d. They were ceded to scotland by norway in the 13th century. The origin of the name is uncertain. It is suggested that it is the result of a misc …

hecateromeric
Denoting a spinal neuron whose axon divides and gives off processes to both sides of the cord; usually the same as a heteromeric neuron. ... Synonym: hecatomeral, hecatomeric. ... Origin: G. Hekateros, each of two, + meros, part ... (05 Mar 2000) ...

hecatomeral
Synonym for hecateromeric ... Denoting a spinal neuron whose axon divides and gives off processes to both sides of the cord; usually the same as a heteromeric neuron. ... Synonym: hecatomeral, hecatomeric. ... Origin: G. Hekateros, each of two, + meros, part ... (05 Mar 2000) ...

Hecht
Victor, early 20th century Austrian pathologist. ... See: Hecht's pneumonia. ... (05 Mar 2000) ...

hecht syndrome
<syndrome> Inherited disorder transmitted as an autosomal dominant trait in which short tight muscles make it impossible to open the mouth fully or keep the fingers straight when the hand is flexed back. The small mouth creates feeding problems. The hands may be so tightly fisted the infant crawls on the knuckles. Also called the trismus pseu …

Hecht's pneumonia
Synonym for giant cell pneumonia ... A rare complication of measles, with the postmortem finding of multinucleated giant cells lining alveoli. ... Synonym: Hecht's pneumonia, interstitial giant cell pneumonia. ... (05 Mar 2000) ...

heck
1. The bolt or latch of a door. ... 2. A rack for cattle to feed at. ... 3. A door, especially one partly of latticework; called also heck door. ... 4. A latticework contrivance for catching fish. ... 5. An apparatus for separating the threads of warps into sets, as they are wound upon the reel from the bobbins, in a warping machine. ... 6. A bend or wi …

Heck's disease
Synonym for focal epithelial hyperplasia ... Hyperplasia of the mucous membrane of the lips, tongue, and less commonly, the buccal mucosa, floor of the mouth, and palate, presenting soft, painless, round to oval sessile papules about 1 to 4 mm in diameter. The condition usually occurs in children and young adults and has familial predilection, lasti …

hectic
1. Habitual; constitutional; pertaining especially to slow waste of animal tissue, as in consumption; as, a hectic type in disease; a hectic flush. ... 2. In a hectic condition; having hectic fever; consumptive; as, a hectic patient. ... <medicine> Hectic fever, a fever of irritation and debility, occurring usually at a advanced stage of exhaus …

hectic flush
Redness of the face associated with a rise of temperature in various fevers. ... (05 Mar 2000) ...

hecto-
<prefix> Prefix used in the SI and metric systems to signfy one hundred (102). ... Origin: G. Hekaton, one hundred ... (05 Mar 2000) ...

hectocotylus
Origin: NL, fr. Gr. A hundred + a hollow vessel. ... <zoology> One of the arms of the male of most kinds of cephalopods, which is specially modified in various ways to effect the fertilization of the eggs. In a special sense, the greatly modified arm of Argonauta and allied genera, which, after receiving the spermatophores, becomes detached fr …

hectogram
One hundred grams, the equivalent of 1543.7 grains. ... (05 Mar 2000) ...

hectoliter
One hundred liters, the equivalent of 105.7 quarts or 26.4 American (22 imperial) gallons. ... (05 Mar 2000) ...

hedeoma
See: pennyroyal. ... (05 Mar 2000) ...

hederiform
Ivy-shaped; a term used for certain sensory endings in the skin. ... Origin: L. Hedera, ivy, + forma, shape ... (05 Mar 2000) ...