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

seborrheic eczema
Synonym for seborrheic dermatitis ... <dermatology> A form of inflammatory skin rash that results from an over activity of the sebaceous glands in the skin. Treatment often includes a mild hydrocortisone-containing cream. ... (27 Sep 1997) ...

seborrheic keratosis
A benign skin lesion resulting from excessive growth of the top layer of skin cells. It usually is found in persons over 30 years old and may be few or numerous. ... (12 Dec 1998) ...

seborrheic verruca
Synonym for seborrheic keratosis ... A benign skin lesion resulting from excessive growth of the top layer of skin cells. It usually is found in persons over 30 years old and may be few or numerous. ... (12 Dec 1998) ...

seborrheic wart
Synonym for seborrheic keratosis ... A benign skin lesion resulting from excessive growth of the top layer of skin cells. It usually is found in persons over 30 years old and may be few or numerous. ... (12 Dec 1998) ...

seborrhoea
1. Excessive secretion of sebum, also called hypersteatosis ... 2. <dermatology> Seborrhoeic dermatitis. ... Origin: L. Sebum = suet, Gr. Rhoia = flow ... (18 Nov 1997) ...

seborrhoea adiposa
seborrhoea oleosa ...

seborrhoea capitis
Seborrhoea of the scalp. ... Synonym: branny tetter. ... Seborrhoea cerea, waxy secretion of sebum. ... Concrete seborrhoea, thick, oily crusts on scalp and eyebrows. ... (05 Mar 2000) ...

seborrhoea corporis
Synonym for seborrheic dermatitis ... <dermatology> A form of inflammatory skin rash that results from an over activity of the sebaceous glands in the skin. Treatment often includes a mild hydrocortisone-containing cream. ... (27 Sep 1997) ...

seborrhoea furfuracea
Synonym for seborrhoea sicca ... An accumulation on the skin, especially the scalp, of dry scales. ... Synonym: seborrhoea furfuracea. ... Synonym: dandruff. ... Seborrhoea squamosa neonatorum, seborrheic dermatitis in infants. ... (05 Mar 2000) ...

seborrhoea nigra
A form of seborrhoea characterised by a pigmented secretion. ... Seborrhoea oleosa, a greasy condition of the skin due to excessive secretion of the sebaceous glands. ... Synonym: cutis unctuosa, hyperhidrosis oleosa, seborrhoea adiposa. ... (05 Mar 2000) ...

seborrhoea sicca
An accumulation on the skin, especially the scalp, of dry scales. ... Synonym: seborrhoea furfuracea. ... Synonym: dandruff. ... Seborrhoea squamosa neonatorum, seborrheic dermatitis in infants. ... (05 Mar 2000) ...

sebum
A thick substance that is secreted by sebaceous glands that consists of fat and cellular debris. ... (27 Sep 1997) ...

sebum preputiale
Synonym for smegma preputii ... Whitish secretion that collects under the prepuce of the foreskin of the penis or of the clitoris; it is comprised chiefly of desquamating epithelial cells. ... Synonym: sebum preputiale. ... (05 Mar 2000) ...

Sec
1. Abbreviation for selenocycsteine. Insertion into selenoenzymes is accomplished by the specific tRNA(Sec). ... 2. E. Coli complex for translocation of proteins across the inner membrane, mutants SecA, SecY. ... (18 Nov 1997) ...

sec 65
Gene of Saccharomyces cerevisiae that encodes a protein very similar to the SRP19 subunit of the mammalian signal recognition particle. ... (18 Nov 1997) ...

secant
1. <geometry> A line that cuts another; especially, a straight line cutting a curve in two or more points. ... 2. <mathematics> A right line drawn from the center of a circle through one end of a circular arc, and terminated by a tangent drawn from the other end; the number expressing the ratio line of this line to the radius of the circ …

secci disk
A black-and-white disk lowered into the water to measure water transparency, an average is taken of the depth at which the disk disappears when lowered and reappears when raised. ... (09 Oct 1997) ...

Secernentasida
A class of nematodes possessing lateral canals opening into the excretory system and phasmids; it includes most of the familiar nematode parasites of humans and domestic animals, including the soil-borne nematodes, strongyles, and filiariae. ... See: Adenophorasida. ... Synonym: Phasmidia, Secernentia. ... Origin: L. Secerno, to separate, hide ... (05 …

secernentea
A subclass of nematodes characterised by numerous caudal papillae and an excretory system possessing lateral canals. ... (12 Dec 1998) ...

secernentea infections
Infections with nematodes of the subclass secernentea. ... (12 Dec 1998) ...

Secernentia
Synonym for Secernentasida ... A class of nematodes possessing lateral canals opening into the excretory system and phasmids; it includes most of the familiar nematode parasites of humans and domestic animals, including the soil-borne nematodes, strongyles, and filiariae. ... See: Adenophorasida. ... Synonym: Phasmidia, Secernentia. ... Origin: L. Sece …

Seckel dwarfism
Synonym for Seckel syndrome ... <syndrome> An autosomal recessive disorder characterised by low birth weight, dwarfism, microcephaly, large eyes, beaked nose, receding mandible, and moderate mental retardation. ... Synonym: Seckel dwarfism. ... (05 Mar 2000) ...

Seckel syndrome
<syndrome> An autosomal recessive disorder characterised by low birth weight, dwarfism, microcephaly, large eyes, beaked nose, receding mandible, and moderate mental retardation. ... Synonym: Seckel dwarfism. ... (05 Mar 2000) ...

seclusion of pupil
The condition resulting from posterior annular synechia, in which the iris is bound down throughout the entire pupillary margin, but the pupil is not occluded. ... Synonym: exclusion of pupil. ... (05 Mar 2000) ...

secobarbital
<chemical> A barbiturate that is used as a sedative. Secobarbital is reported to have no anti-anxiety activity. ... Pharmacological action: anaesthesia adjuvants, gaba modulators, sedatives, barbiturate. ... Chemical name: 2,4,6(1H,3H,5H)-Pyrimidinetrione, 5-(1-methylbutyl)-5-(2-propenyl)- ... (12 Dec 1998) ...

second
1. Immediately following the first; next to the first in order of place or time; hence, occuring again; another; other. 'And he slept and dreamed the second time.' (Gen. Xli. 5) ... 2. Next to the first in value, power, excellence, dignity, or rank; secondary; subordinate; inferior. 'May the day when we become the second people upon earth . . . Be t …

second cranial nerve
Synonym for optic nerve ... <anatomy, nerve> The optic nerve. The nerve carrying impulses for the sense of sight. ... Projection from the vertebrate retina to the midbrain. Embryologically, a CNS tract rather than a peripheral nerve. Popular experimental preparation for studies of regeneration of retino tectal projections in lower vertebrates a …

second cuneiform bone
Synonym for intermediate cuneiform bone ... A bone of the distal row of the tarsus; it articulates with the medial and lateral cuneiform, navicular, and second metatarsal bones. ... Synonym: os cuneiforme intermedium, mesocuneiform, middle cuneiform bone, second cuneiform bone, wedge bone. ... (05 Mar 2000) ...

second degree A-V block
See: atrioventricular block. ... (05 Mar 2000) ...

second degree burn
A burn involving the epidermis and dermis and usually forming blisters that may be superficial, or by deep dermal necrosis, followed by epithelial regeneration extending from the skin appendages. ... Synonym: partial-thickness burn. ... (05 Mar 2000) ...

second finger
Synonym for index finger ... The second finger (the thumb being counted as the first). ... Synonym: digitus secundus, forefinger, index, second finger. ... (05 Mar 2000) ...

second gas effect
When a constant concentration of an anaesthetic like halothane is inspired, the increase in alveolar concentration is accelerated by concomitant administration of nitrous oxide, because alveolar uptake of the latter creates a potential subatmospheric intrapulmonary pressure that leads to increased tracheal inflow. ... (05 Mar 2000) ...

second growth
A second generation of timber of merchantable age. ... (05 Dec 1998) ...

second heart sound
The second sound heard on auscultation of the heart; signifies the beginning of diastole and is due to closure of the semilunar valves. ... Synonym: second sound. ... (05 Mar 2000) ...

second incisor
Second maxillary or mandibular permanent or deciduous tooth on either side of the midsagittal plane of the head. ... Synonym: lateral incisor. ... (05 Mar 2000) ...

second law of thermodynamics
<physics> All of the chemical and physical processes in a closed system tend to drive that system toward maximum entropy. ... Clausius statement: No device can operate in a cycle and allow heat to transfer from a colder body to a hotter body unless other compensating activities are taking place. ... Kelvin-Planck statement: no device can operat …

second line chemotherapy
<oncology> Chemotherapy given for a tumour which has already failed to respond to a first chemotherapy regimen (called first line). ... (16 Dec 1997) ...

second meiotic division
The second of two consecutive divisions of the nucleus of an eukaryotic cell during the process of meiosis. It includes the following stages of meiosis: prophase II, metaphase II, anaphase II, and telophase II. ... (09 Oct 1997) ...

second messenger
<molecular biology> In many hormone sensitive systems the systemic hormone does not enter the target cell but binds to a receptor and indirectly affects the production of another molecule within the cell, this diffuses intracellularly to the target enzymes or intracellular receptor to produce the response. This intracellular mediator is calle …

second messenger systems
Systems in which an intracellular signal is generated in response to an intercellular primary messenger such as a hormone or neurotransmitter. They are intermediate signals in cellular processes such as metabolism, secretion, contraction, phototransduction, and cell growth. Examples of second messenger systems are the adenyl cyclase-cyclic AMP syst …

second molar
Seventh permanent or fifth deciduous tooth in the maxilla and mandible on either side of the midsagittal plane of the head following the arch form. ... (05 Mar 2000) ...

second parallel pelvic plane
Synonym for pelvic plane of greatest dimensions ... The plane extending from the middle of the posterior surface of the pubic symphysis to the junction of the second and third sacral vertebrae, and laterally passing through the ischial bones over the middle of the acetabulum. ... Synonym: second parallel pelvic plane, wide plane. ... (05 Mar 2000) ...

second set rejection
An accelerated rejection of a transplant that occurs when an individual has been previously sensitised to the graft. ... (05 Mar 2000) ...

second sight
1. <ophthalmology> Improved near vision in the aged as a result of increased refractivity of the nucleus of the lens causing myopia. ... Synonym: senile lenticular myopia. ... 2. The power of discerning what is not visible to the physical eye, or of foreseeing future events. Such as are of a disastrous kind, the capacity of a seer or prophetic …

second signaling system
<psychology> Pavlovian term for speech in which words are considered to be the second signals capable of producing conditioned responses. ... (05 Mar 2000) ...

second sound
Synonym for second heart sound ... The second sound heard on auscultation of the heart; signifies the beginning of diastole and is due to closure of the semilunar valves. ... Synonym: second sound. ... (05 Mar 2000) ...

second stage of labour
<obstetrics> The part of labour from the full dilatation of the cervix until the baby is completely out of the birth canal. The second stage of labour is also called the stage of expulsion. ... (12 Dec 1998) ...

second temporal convolution
Synonym for middle temporal gyrus ... A longitudinal gyrus on the lateral surface of the temporal lobe, between the superior and inferior temporal sulci. ... Synonym: gyrus temporalis medius, middle temporal convolution, second temporal convolution. ... (05 Mar 2000) ...

second tibial muscle
Synonym for musculus tibialis secundus ... An inconstant muscle, of small size, arising from the back of the tibia and inserted into the articular capsule of the ankle joint. ... Synonym: second tibial muscle. ... (05 Mar 2000) ...

second tooth
Synonym for permanent tooth ... One of the 32 teeth belonging to the second or permanent dentition; eruption of the permanent teeth begins from the fifth to the seventh year, and is not completed until the seventeenth to the twenty-third year, when the last of the wisdom teeth appears. ... Synonym: dens permanens, dens succedaneus, second tooth, seco …

second-look operation
Exploratory celiotomy within a year after apparently curative resection of intra-abdominal cancer, in patients with no sign or symptom of recurrence, to resect an occult tumour if present. ... (05 Mar 2000) ...

second-order conditioning
The use of a previously successfully conditioned stimulus as the unconditioned stimulus for further conditioning. ... (05 Mar 2000) ...

second-order kinetics
A term describing the reaction rate of a chemical reaction in which the rate is proportional to the product of the concentrations (in moles) of two of the reactants (also called bimolecular kinetics), or to the square of the molar concentration of the reactant if there is only one. Such a reaction might have an equation like rate = k[A][B] or rate …

second-stability region
<radiobiology> A high pressure region where the plasma becomes stable to the pressure-gradient-driven ballooning instability. ... The plasma is stable in the limit of small pressure gradients, becomes unstable at some intermediate pressure, and then becomes stable again at still higher pressures. Tokamaks operating in the second-stability regi …

secondaries
Synonym: metastasis. ... 2. The lesions of secondary syphilis. ... (05 Mar 2000) ...

secondary
Second or inferior in order of time, place or importance, derived from or consequent to a primary event or thing. ... Origin: L. Secundarius, secundus = second ... (18 Nov 1997) ...

secondary abdominal pregnancy
A condition in which the embryo or foetus continues to grow in the abdominal cavity after its expulsion from the fallopian tube or other seat of its primary development. ... Synonym: abdominocyesis. ... (05 Mar 2000) ...

secondary adhesion
Synonym for healing by second intention ... Delayed closure of two granulating surfaces. ... Synonym: secondary adhesion, secondary union. ... (05 Mar 2000) ...

secondary aerodontalgia
Pain referred to the dental area from an area of aerosinusitis. ... (05 Mar 2000) ...

secondary agammaglobulinaemia
Synonym for secondary immunodeficiency ... Immunodeficiency in which there is no evident defect in the lymphoid tissues, but rather hypercatabolism or loss of immunoglobulins such as occurs in familial idiopathic hypercatabolic hypoproteinaemia or in defects associated with the nephrotic syndrome. ... Synonym: secondary agammaglobulinaemia, secondary …

secondary alcohol
An alcohol characterised by the bivalent atom group ... (05 Mar 2000) ...

secondary aldosteronism
Aldosteronism resulting not from a defect intrinsic to the adrenal cortex but from a stimulation of hormonal secretion caused by extra-adrenal disorders; associated with increased plasma renin activity and occurs in heart failure, nephrotic syndrome, cirrhosis, and hypoproteinaemia. ... (05 Mar 2000) ...

secondary amenorrhoea
Amenorrhoea in which the menses appeared at puberty but subsequently ceased. ... (05 Mar 2000) ...

secondary amine monooxygenase
<enzyme> Catalyses NADH or NADPH dependent oxidative n-dealkylation of short chain aliphatic secondary amines with a methyl or ethyl group ... Registry number: EC 1.14.99.- ... Synonym: dimethylamine mono-oxygenase, secondary amine mono-oxygenase ... (26 Jun 1999) ...

secondary amputation
Amputation performed some time after a previous amputation that has failed to heal satisfactorily. ... (05 Mar 2000) ...

secondary amyloidosis
Amyloidosis occurring in association with another chronic inflammatory disease; organs chiefly involved are the liver, spleen, and kidneys, and the adrenal glands less frequently. ... (05 Mar 2000) ...

secondary anaesthetic
A compound that contributes to, but is not primarily responsible for, loss of sensation when two or more anaesthetics are simultaneously administered. ... (05 Mar 2000) ...

secondary antibody deficiency
Synonym for secondary immunodeficiency ... Immunodeficiency in which there is no evident defect in the lymphoid tissues, but rather hypercatabolism or loss of immunoglobulins such as occurs in familial idiopathic hypercatabolic hypoproteinaemia or in defects associated with the nephrotic syndrome. ... Synonym: secondary agammaglobulinaemia, secondary …

secondary antibody response
An antibody made upon second (subsequent) exposure to an antigen, mostly of the class IgG. ... (09 Oct 1997) ...

secondary aortic area
Region of the chest at the mid-left sternal bases where aortic diastolic murmurs are often best heard. ... (05 Mar 2000) ...

secondary atelectasis
A nonexpansion of the lungs after birth is known as primary atelectasis. Secondary atelectasis can occur at any age but is common in infants due to hyaline membrane disease. This form may also be seen in patients after surgery (general anaesthesia). ... See: atelectasis. ... (27 Sep 1997) ...

secondary axis
Any ray passing through the optical centre of a lens. ... (05 Mar 2000) ...

secondary buffer
See: Hamburger's law. ... (05 Mar 2000) ...

secondary calcium phosphate
Synonym for dibasic calcium phosphate ... CaHPO4-2H2O;used as a calcium and phosphorus dietary supplement. ... Synonym: calcium monohydrogen phosphate, secondary calcium phosphate. ... (05 Mar 2000) ...

secondary carcinoma
Synonym for metastatic carcinoma ... <tumour> A carcinoma that has appeared in a region remote from its site of origin, as in metastasis. ... Synonym: secondary carcinoma. ... (05 Mar 2000) ...

secondary cardiomyopathy
Disease that affects the myocardium secondarily to systemic disease, infection, or metabolic disease. ... (05 Mar 2000) ...

secondary caries
Caries of enamel beginning at the dento-enamel junction due to a rapid lateral spread of decay from the original decay. ... (05 Mar 2000) ...

secondary cataract
A cataract that accompanies or follows some other eye disease such as uveitis. ... Synonym: complicated cataract. ... A cataract occurring in the retained lens or capsule after a cataract extraction. ... Synonym: aftercataract. ... (05 Mar 2000) ...

secondary cementum
Cementum that forms on the root surface after eruption; it contains cementocytes. ... (05 Mar 2000) ...

secondary centre of ossification
This is the centre of bone formation appearing later than the punctum ossificationis primarium, usually in epiphysis. ... Synonym: punctum ossificationis secundarium, secondary point of ossification. ... (05 Mar 2000) ...

secondary choana
The definitive choana opening into the nasopharynx, after the nasal chambers have been lengthened by the formation of the secondary palate. ... Synonym: internal nostril. ... (05 Mar 2000) ...

secondary coccidioidomycosis
Progressive or disseminated extrapulmonary granulomatous lesions following primary coccidioidomycosis. ... Synonym: coccidioidal granuloma. ... (05 Mar 2000) ...

secondary constriction
A subsidiary narrowing of the chromosome associated in some cases with satellites. ... (05 Mar 2000) ...

secondary dementia
Chronic dementia following and due to a psychosis or some other underlying disease process. ... Senile dementia, dementia of Alzheimer's disease developing after age 65. ... Toxic dementia, dementia caused by an exogenous agent. ... (05 Mar 2000) ...

secondary dentin
Dentin formed by normal pulp function after root end formation is complete. ... (05 Mar 2000) ...

secondary dentition
Synonym for permanent tooth ... One of the 32 teeth belonging to the second or permanent dentition; eruption of the permanent teeth begins from the fifth to the seventh year, and is not completed until the seventeenth to the twenty-third year, when the last of the wisdom teeth appears. ... Synonym: dens permanens, dens succedaneus, second tooth, seco …

secondary deviation
Ocular deviation seen in paralysis of an ocular muscle when the paralysed eye is used for fixation. ... (05 Mar 2000) ...

secondary dextrocardia
Dextroposition of the heart by some disease of the lungs, pleura, or diaphragm. ... Synonym: type 4 dextrocardia. ... (05 Mar 2000) ...

secondary digestion
The change in the chyle effected by the action of the cells of the body, whereby the final products of digestion are assimilated in the process of metabolism. ... (05 Mar 2000) ...

secondary disease
A disease that follows and results from an earlier disease, injury, or event, a wasting disorder that follows successful transplantation of bone marrow into a lethally irradiated host; frequently severe and usually associated with fever, anorexia, diarrhoea, dermatitis, and desquamation. ... See: graft versus host disease. ... (05 Mar 2000) ...

secondary drives
Those drives not directly related to biological needs; a secondary drive can be learned as an offshoot of a primary drive, in which case it is often referred to as a motive. ... Synonym: acquired drives. ... (05 Mar 2000) ...

secondary drowning
Pulmonary oedema and resulting asphyxia, resulting from hypoxia and increased permeability of pulmonary capillaries occurring in a patient who has been immersed in and aspirated some water. ... (05 Mar 2000) ...

secondary dysmenorrhoea
Dysmenorrhoea due to inflammation, infection, tumour, or anatomical factors. ... (05 Mar 2000) ...

secondary egg membrane
See: egg membrane. ... (05 Mar 2000) ...

secondary electron
<microscopy> Produced by an incident electron passing near an atom in the specimen, near enough to impart some of its energy to a lower energy electron (usually in the K-shell). This causes a slight energy loss and path change in the incident electron and the ionisation of the electron in the specimen atom. This ionised electron then leaves t …

secondary electron imaging
<microscopy> Production of secondary electrons is very topography related. Due to their low energy, 5eV, only secondaries that are very near the surface (less than 10nm) can exit the sample and be examined. Any changes in topography in the sample that are larger than this sampling depth will change the yield of secondaries due to collection e …

secondary encephalitis
Collective term for post-infectious, post-exanthem, and post-vaccinal encephalitides. ... (05 Mar 2000) ...

secondary failure
Failure of the function of an organ as a result of antecedent pathology elsewhere, decreasing responsiveness to a drug after an initial satisfactory response, usually occurring several months after initiation of treatment. ... (05 Mar 2000) ...

secondary fissure of cerebellum
A fissure that separates the uvula of the inferior vermis of the cerebellum from the pyramid. ... Synonym: fissura secunda cerebelli. ... (05 Mar 2000) ...

secondary follicle
Synonym for vesicular ovarian follicle ... A follicle in which the oocyte attains its full size and is surrounded by an extracellular glycoprotein layer (zona pellucida) that separates it from a peripheral layer of follicular cells permeated by one or more fluid-filled antra; the theca of the follicle develops into internal and external layers. ... S …