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

stationary
1. Not moving; not appearing to move; stable; fixed. 'Charles Wesley, who is a more stationary man, does not believe the story.' (Southey) ... 2. Not improving or getting worse; not growing wiser, greater, better, more excellent, or the contrary. ... 3. Appearing to be at rest, because moving in the line of vision; not progressive or retrograde, as a …

stationary anchorage
Anchorage in which the resistance to the movement of one or more teeth comes from the resistance to bodily movement of the anchorage unit; a questionable concept since the selected teeth remain only relatively stable. ... (05 Mar 2000) ...

stationary cataract
A cataract that does not progress. ... (05 Mar 2000) ...

stationary phase
The plateau of the growth curve after log growth in a culture, duringwhich cellnumber remains constant. New cells are produced at the same rate as oldercells die. ... (09 Oct 1997) ...

statistic
Any function computed from the values of a random sample, such as the sample mean or median, when considered as a random variable with a known probability distribution. ... (18 Nov 1997) ...

statistical distributions
The complete summaries of the frequencies of the values or categories of a measurement made on a group of items, a population, or other collection of data. The distribution tells either how many or what proportion of the group was found to have each value (or each range of values) out of all the possible values that the quantitative measure can hav …

statistical genetics
The study of the applications of principles of statistics to problems in genetics. ... (05 Mar 2000) ...

statistical model
A formal representation for a class of processes that allows a means of analyzing results from experimental studies, such as the Poisson model or the general linear model; it need not propose a process literally interpretable in the context of the individual case. ... (05 Mar 2000) ...

statistical significance
Statistical methods allow an estimate to be made of the probability of the observed degree of association between variables, and from this the statistical significance can be expressed, commonly in terms of the P value. ... (05 Mar 2000) ...

statistics
The science and art of collecting, summarizing, and analyzing data that are subject to random variation. The term is also applied to the data themselves and to the summarization of the data. ... (12 Dec 1998) ...

statistics, nonparametric
A class of statistical methods applicable to a large set of probability distributions used to test for correlation, location, independence, etc. In most nonparametric statistical tests, the original scores or observations are replaced by another variable containing less information. An important class of nonparametric tests employs the ordinal prop …

statoacoustic
Relating to equilibrium and hearing. ... Synonym: vestibulocochlear. ... Origin: G. Statos, standing, + akoustikos, acoustic ... (05 Mar 2000) ...

statoacoustic nerve
Synonym for vestibulocochlear nerve ... <anatomy, nerve> The vestibulocochlear nerve is responsible for the sense of hearing and balance (body position sense). ... Lesions of the eighth nerve can result in deafness, tinnitus, dizziness, vertigo and vomiting. ... Synonym: cranial nerve VIII. ... (27 Sep 1997) ...

statoconia
Synonym: statoliths. ... Origin: L. Fr. G. Statos, standing, konis, dust ... (05 Mar 2000) ...

statoconial membrane
A gelatinous membrane supported by the hairs of the hair cells of the maculae of the saccule and utriculus of the inner ear; adhering to the surface are numerous crystalline particles called statoconia. ... Synonym: membrana statoconiorum, otolithic membrane. ... (05 Mar 2000) ...

statocyst
<zoology> An organ for the perception of gravity and thus body orientation, found in many invertebrate animals, a cavity lined with sensory cells and containing a statolith. ... (20 Mar 1998) ...

statocyte
<plant biology> A root tip cell containing one or more statoliths, involved in the detection of gravity in geotropism. ... (20 Mar 1998) ...

statokinetic
Pertaining to statokinetics. ... (05 Mar 2000) ...

statokinetic reflex
A reflex which, through stimulation of the receptors in the neck muscles and semicircular canals, brings about movements of the limbs and eyes appropriate to a given movement of the head in space. ... (05 Mar 2000) ...

statokinetics
The adjustment made by the body in motion to maintain stable equilibrium. ... Origin: G. Statos, standing, + kinesis, movement ... (05 Mar 2000) ...

statolith
1. <botany> A type of amyloplast found in root tip cells of higher plants. It can sediment within the cell under the influence of gravity and is thought to be involved in the detection of gravity in geotropism. ... 2. <zoology> A sand grain or a structure of calcium carbonate or other hard secreted substance, found in the cavity of a sta …

statoliths
Crystalline particles of calcium carbonate and a protein adhering to the gelatinous membrane of the maculae of the utricle and saccule. ... Synonym: statoconia, ear crystals, otoconia, otoliths, otolites, sagitta. ... Origin: G. Statos, standing, + lithos, stone ... (05 Mar 2000) ...

statometer
Synonym: exophthalmometer. ... Origin: G. Statos, standing, + metron, measure ... (05 Mar 2000) ...

statosphere
Synonym for centrosphere ... Alternative (rare) name for centrosome. ... (18 Nov 1997) ...

statotonic reflexes
Reflex's in which utricular receptors in the vestibular apparatus sense changes in the head's position in space in terms of linear acceleration and the earth's gravitational field while receptors in the neck muscles sense changes in the position of the head relative to the trunk; input from these receptors reflexly controls the tone of the limb mus …

stature
The height of a person. ... Origin: L. Statura, fr. Statuo, pp. Statutus, to cause to stand ... (05 Mar 2000) ...

status
State or condition. ... (18 Nov 1997) ...

status anginosus
Prolonged angina pectoris refractory to treatment. ... (05 Mar 2000) ...

status arthriticus
An obsolete term for gouty diathesis or predisposition. ... (05 Mar 2000) ...

status asthmaticus
A severe asthma attack where there is profound and intractable bronchospasm. ... (27 Sep 1997) ...

status choleraicus
The cold stage of shock and depression in cholera, due to fluid and electrolyte loss and resulting hypovolaemia; characterised by weak pulse, cold clammy skin, confusion, and depression. ... (05 Mar 2000) ...

status choreicus
A very severe form of chorea in which the persistence of the movements prevents sleep and the patient may die of exhaustion. ... (05 Mar 2000) ...

status convulsivus
Synonym for epilepsy ... <disease, neurology> The paroxysmal transient disturbances of brain function that may be manifested as episodic impairment or loss of consciousness, abnormal motor phenomena, psychic or sensory disturbances or perturbation of the autonomic nervous system. ... Symptoms are due to paroxysmal disturbance of the electrical …

status cribrosus
A condition marked by dilations of the perivascular spaces in the brain. ... (05 Mar 2000) ...

status criticus
A very severe and persistent form of crisis in tabes dorsalis. ... (05 Mar 2000) ...

status dysmyelinisatus
Synonym for Hallervorden-Spatz syndrome ... <neurology, syndrome> A progressive hereditary disorder with marked reduction in the number of myelin sheaths of the globus pallidus and substantia nigra with accumulation of iron pigment. ... Manifestations include dysarthria, progressive mental deterioration, and corticospinal and extrapyramidal mot …

status dysraphicus
A condition in which there is failure of fusion of midline structures; related to syringomyelia and perhaps to Marfan's syndrome or arachnodactyly. ... Synonym: arrhaphia. ... (05 Mar 2000) ...

status epilepticus
A series of rapidly repeated seizures without regaining consciousness between them. ... (12 Dec 1998) ...

status hemicranicus
A condition in which attacks of migraine succeed each other with such short intervals as to be almost continuous. ... (05 Mar 2000) ...

status hypnoticus
Rarely used term for hypnosis. ... (05 Mar 2000) ...

status lacunaris
A condition, occurring in cerebral arteriosclerosis, in which there are numerous small areas of degeneration in the brain. ... (05 Mar 2000) ...

status lymphaticus
Synonym for status thymicolymphaticus ... Old term for a syndrome of supposed enlargement of the thymus and lymph nodes in infants and young children, formerly believed to be associated with unexplained sudden death; it was also erroneously believed that pressure of the thymus on the trachea might cause death during anaesthesia. Prominence of these …

status marmoratus
A congenital condition due to maldevelopment of the corpus striatum associated with choreoathetosis, in which the striate nuclei have a marblelike appearance caused by altered myelination. ... (05 Mar 2000) ...

status nervosus
Synonym for status typhosus ... Rarely used term for an erethistic or typhoidal state. ... Synonym: status nervosus. ... (05 Mar 2000) ...

status novus
New status, representing a change in status. ... (09 Jan 1998) ...

status praesens
An obsolete term for the part of the history of a case describing the condition of the patient at the time when he comes under observation. ... (05 Mar 2000) ...

status raptus
Rarely used term for ecstasy. ... (05 Mar 2000) ...

status spongiosus
Multiple fluid-filled spaces of microscopic size in the cerebral white matter; seen in certain hypoxic, toxic, and metabolic diseases. ... (05 Mar 2000) ...

status sternuens
A state of continual sneezing. ... (05 Mar 2000) ...

status thymicolymphaticus
Old term for a syndrome of supposed enlargement of the thymus and lymph nodes in infants and young children, formerly believed to be associated with unexplained sudden death; it was also erroneously believed that pressure of the thymus on the trachea might cause death during anaesthesia. Prominence of these structures is now considered normal in yo …

status thymicus
Synonym for status thymicolymphaticus ... Old term for a syndrome of supposed enlargement of the thymus and lymph nodes in infants and young children, formerly believed to be associated with unexplained sudden death; it was also erroneously believed that pressure of the thymus on the trachea might cause death during anaesthesia. Prominence of these …

status typhosus
Rarely used term for an erethistic or typhoidal state. ... Synonym: status nervosus. ... (05 Mar 2000) ...

status vertiginosus
A condition in which attacks of vertigo occur in rapid succession. ... Synonym: chronic vertigo. ... (05 Mar 2000) ...

statute
1. An act of the legislature of a state or country, declaring, commanding, or prohibiting something; a positive law; the written will of the legislature expressed with all the requisite forms of legislation; used in distinction fraom common law. See Common law, under Common. ... Statute is commonly applied to the acts of a legislative body consistin …

statuvolence
Synonym: autohypnosis. ... Origin: status (hypnoticus) + L. Volens, pres. P. Of volo, to wish ... (05 Mar 2000) ...

statuvolent
Relating to or capable of statuvolence. ... (05 Mar 2000) ...

statvolt
An electrostatic unit of potential or electromotive force, equal to 299.7925 volts. ... Origin: G. Statos, standing (stationary), + volt ... (05 Mar 2000) ...

Staub-Traugott effect
In normal persons, a drop in blood glucose which follows a second oral dose of glucose given 30 minutes or so after the first. ... (05 Mar 2000) ...

Staub-Traugott phenomenon
The increased rate of removal of loads of glucose given shortly after administration of an initial glucose load. ... (05 Mar 2000) ...

Staub, Hans
<person> Swiss internist, *1890. ... See: Staub-Traugott effect, Staub-Traugott phenomenon. ... (05 Mar 2000) ...

Stauffer's syndrome
<syndrome> Elevation of liver function tests, in the absence of metastatic disease, due to cholestasis in renal cell cancer patients. ... (05 Mar 2000) ...

staurion
A craniometric point at the intersection of the median and transverse palatine sutures. ... Origin: G. Dim. Of stauros, cross ... (05 Mar 2000) ...

staurosporine
<chemical> A potent protein kinase c inhibitor that enhances camp-mediated responses in human neuroblastoma cells. (biochem biophys res commun 1995;214(3):1114-20) ... Pharmacological action: carcinogens, enzyme inhibitors, radiation-sensitizing agents. ... Chemical name: 8,12-Epoxy-1H,8H-2,7b,12a-triazadibenzo(a,g)cyclonona(cde)trinden-1-one, …

stave
1. One of a number of narrow strips of wood, or narrow iron plates, placed edge to edge to form the sides, covering, or lining of a vessel or structure; especially, one of the strips which form the sides of a cask, a pail, etc. ... 2. One of the cylindrical bars of a lantern wheel; one of the bars or rounds of a rack, a ladder, etc. ... 3. A metrical …

stavudine
<chemical> A dideoxynucleoside analog that inhibits reverse transcriptase and has in vitro activity against HIV. ... Pharmacological action: anti-HIV agents, antimetabolites, reverse transcriptase inhibitors. ... Chemical name: Thymidine, 2',3'-didehydro-3'-deoxy- ... (12 Dec 1998) ...

stay
1. To stop from motion or falling; to prop; to fix firmly; to hold up; to support. 'Aaron and Hur stayed up his hands, the one on the one side, and the other on the other side.' (Ex. Xvii. 12) 'Sallows and reeds . . . For vineyards useful found To stay thy vines.' (Dryden) ... 2. To support from sinking; to sustain with strength; to satisfy in part …

std
Synonym for sexually transmitted disease ... <disease> A disease, such as genital herpes, gonorrhoea, HIV or chlamydia, whose usual means of transmission is by sexual contact. ... (09 Oct 1997) ...

stds in women
See Sexually transmitted diseases in women. ... (12 Dec 1998) ...

STE11 protein kinase
<enzyme> Protein kinase required for cell-type-specific transcription and signal transduction in saccharomyces cerevisiae ... Registry number: EC 2.7.1.- ... (26 Jun 1999) ...

Ste20p kinase
<enzyme> From saccharomyces cerevisiae; protein kinase homologue required to link g-protein beta-gamma subunits to downstream signalling components; a putative serine-threonine-specific kinase required for mating ... Registry number: EC 2.7.10.- ... Synonym: ste20 gene product, ste20p protein, ste20 protein ... (26 Jun 1999) ...

STE8 protein kinase
<enzyme> 659 amino acid residues; a s. Pombe protein kinase homologous to yeast ste11 protein kinase; required for signal transduction ... Registry number: EC 2.7.1.- ... Synonym: ste8 gene product ... (26 Jun 1999) ...

steady
1. Firm in standing or position; not tottering or shaking; fixed; firm. 'The softest, steadiest plume.' 'Their feet steady, their hands diligent, their eyes watchful, and their hearts resolute.' (Sir P. Sidney) ... 2. Constant in feeling, purpose, or pursuit; not fickle, changeable, or wavering; not easily moved or persuaded to alter a purpose; reso …

steady state
A dynamic equilibrium. ... (13 Nov 1997) ...

steady-state rate
Synonym for steady-state velocity ... The velocity of an enzyme-catalyzed reaction in which, over the time course of the study, the concentration of any enzyme species is constant (i.e., for an enzyme-substrate binary complex, ES, d[ES]/dt&apprxeq;00; for this to hold true, the total enzyme concentration must be much less than the initial substr …

steady-state velocity
The velocity of an enzyme-catalyzed reaction in which, over the time course of the study, the concentration of any enzyme species is constant (i.e., for an enzyme-substrate binary complex, ES, d[ES]/dt&apprxeq;00; for this to hold true, the total enzyme concentration must be much less than the initial substrate concentration. ... Synonym: steady …

steal
1. To take and carry away, feloniously; to take without right or leave, and with intent to keep wrongfully; as, to steal the personal goods of another. 'Maugre thy heed, thou must for indigence Or steal, or borrow, thy dispense.' (Chaucer) 'The man who stole a goose and gave away the giblets in lms.' (G. Eliot) ... 2. To withdraw or convey clandesti …

stealth
1. The act of stealing; theft. 'The owner proveth the stealth to have been committed upon him by such an outlaw.' (Spenser) ... 2. The thing stolen; stolen property. 'Sluttish dens . . . Serving to cover stealths.' ... 3. The bringing to pass anything in a secret or concealed manner; a secret procedure; a clandestine practice or action; in either a g …

steam
1. To emit steam or vapor. 'My brother's ghost hangs hovering there, O'er his warm blood, that steams into the air.' (Dryden) 'Let the crude humors dance In heated brass, steaming with fire intence.' (J. Philips) ... 2. To rise in vapor; to issue, or pass off, as vapor. 'The dissolved amber . . . Steamed away into the air.' (Boyle) ... 3. To move or …

steam conversion factors
(approximations) 1 pound of steam = 1,000 Btu = .3 kW. 10,000 lbs/hr steam = 300 boiler horsepower. ... (05 Dec 1998) ...

steam engine
An engine moved by steam. ... In its most common forms its essential parts are a piston, a cylinder, and a valve gear. The piston works in the cylinder, to which steam is admitted by the action of the valve gear, and communicates motion to the machinery to be actuated. Steam engines are thus classified: 1. According to the wat the steam is used or a …

steam turbine
A device for converting energy of high-pressure steam (produced in a boiler) into mechanical power which can then be used to generate electricity. ... (05 Dec 1998) ...

steam-fitter's asthma
Asthma associated with asbestosis acquired by exposure to asbestos-insulated heating and plumbing components. ... (05 Mar 2000) ...

steamer
1. A vessel propelled by steam; a steamship or steamboat. ... 2. A steam fire engine. See Steam. ... 3. A road locomotive for use on common roads, as in agricultural operations. ... 4. A vessel in which articles are subjected to the action of steam, as in washing, in cookery, and in various processes of manufacture. ... 5. <zoology> The steamer d …

stearal
Octadecanal(dehyde);the aldehyde of stearic acid. ... Synonym: stearaldehyde. ... (05 Mar 2000) ...

stearaldehyde
Synonym for stearal ... Octadecanal(dehyde);the aldehyde of stearic acid. ... Synonym: stearaldehyde. ... (05 Mar 2000) ...

stearates
Salts and esters of the 18-carbon saturated, monocarboxylic acid--stearic acid. ... (12 Dec 1998) ...

stearic acid
Synonym for fatty acids ... Organic, monobasic acids derived from hydrocarbons by the equivalent of oxidation of a methyl group to an alcohol, aldehyde, and then acid. Fatty acids are saturated and unsaturated (fatty acids, unsaturated). ... (12 Dec 1998) ...

stearic acids
A group of compounds that are derivatives of octadecanoic acid which is one of the most abundant fatty acids found in animal lipids. ... (12 Dec 1998) ...

stearin
<physiology> One of the constituents of animal fats and also of some vegetable fats, as the butter of cacao. It is especially characterised by its solidity, so that when present in considerable quantity it materially increases the hardness, or raises the melting point, of the fat, as in mutton tallow. Chemically, it is a compound of glyceryl …

Stearns alcoholic amentia
A temporary alcoholic mental disorder resembling delirium tremens but lasting for a longer time and showing a greater degree of amnesia and other mental defects. ... (05 Mar 2000) ...

Stearns, A Warren
<person> U.S. Physician, 1885-1959. ... See: Stearns alcoholic amentia. ... (05 Mar 2000) ...

stearo-
Combining form denoting fat. ... See: steato-. ... Origin: G. Stear, tallow ... (05 Mar 2000) ...

stearoyl transacylase
<enzyme> From bovine testis membrnes; CoA dependent; transfers stearoyl groups from a variety of phospholipids to sn-2-arachidonoyl lysophosphatidic acid ... Registry number: EC 2.3.1.- ... Synonym: stearoyl acyltransferase ... (26 Jun 1999) ...

stearoyl-CoA desaturase
<enzyme> An enzyme that catalyses the formation of oleoyl-CoA, a, and water from stearoyl-CoA, ah2, and oxygen where ah2 is an unspecified hydrogen donor. ... Chemical name: Stearoyl-CoA,hydrogen-donor:oxygen oxidoreductase ... Registry number: EC 1.14.99.5 ... (12 Dec 1998) ...

stearrhoea
Synonym for steatorrhoea ... Faecal matter that is frothy, foul-smelling and floats because of a high fat content. A finding that is typical in malabsorption syndromes. ... (27 Sep 1997) ...

stearyl alcohol
Octadecyl alcohol; octadecanol;an ingredient of hydrophilic ointment and hydrophilic petrolatum; also used in the preparation of creams. ... (05 Mar 2000) ...

stearyl-CoA
Stearyl-coenzyme A ... The coenzyme A thioester of stearic acid; precursor to oleic acid and, in the brain, the C22 and C24 fatty acids present in sphingomyelins; in the brain, use of stearyl-CoA increases during myelination. ... (05 Mar 2000) ...

stearyl-CoA desaturase
A protein complex that is key in the synthesis of unsaturated fatty acids; it introduces a double bond at d9; high dietary levels of unsaturated fatty acids decrease this enzyme's activity in the liver; a number of agents will induce this enzyme (e.g., insulin, hydrocortisone, and triiodothyronine). ... (05 Mar 2000) ...

steatitis
A disease of cats and mink characterised by a marked inflammation of adipose tissue and the deposition of 'ceroid' pigment in the interstices of the adipose cells. It is believed to be caused by feeding diets containing too much unsaturated fatty acid and too little vitamin e. ... (12 Dec 1998) ...

steato-
Combining form denoting fat. ... See: stearo-. ... Origin: G. Stear (steat-), tallow ... (05 Mar 2000) ...