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


luminous
1. Shining; emitting or reflecting light; brilliant; bright; as, the is a luminous body; a luminous colour. 'Fire burneth wood, making it . . . Luminous.' (Bacon) 'The mountains lift . . . Their lofty and luminous heads.' (Longfellow) ... 2. Illuminated; full of light; bright; as, many candles made the room luminous. 'Up the staircase moved a lumino …

luminous flux
The quantity of light emitted from a point source in a given time; its unit is the lumen. ... (05 Mar 2000) ...

luminous intensity
The luminous flux per unit solid angle in a given direction. ... Synonym: candle-power, radiant intensity. ... (05 Mar 2000) ...

luminous retinoscope
<instrument> A portable optical device providing either a circular or linear (streak) beam of light. ... (05 Mar 2000) ...

lumirhodopsin
<protein> Altered form of rhodopsin produced as a result of illumination. ... (18 Nov 1997) ...

lumisome
<cell biology> SuB-cellular membrane enclosed vesicle that is the site of bioluminescence in some marine coelenterates. ... Origin: Gr. Soma = body ... (18 Nov 1997) ...

lumisterol
1. A by-product in ergocalciferol biosynthesis. ... 2. A phosphorylated derivative of ribulose that is an intermediate in the pentose monophosphate shunt. ... (05 Mar 2000) ...

lump
Any kind of abnormal mass in the breast or elsewhere in the body. ... (09 Oct 1997) ...

lumpectomy
<procedure, surgery> An operation to remove a lump, usually from the body or the breast. ... (16 Dec 1997) ...

lumpfish
<zoology> A large, thick, clumsy, marine fish (Cyclopterus lumpus) of Europe and America. The colour is usually translucent sea green, sometimes purplish. It has a dorsal row of spiny tubercles, and three rows on each side, but has no scales. The ventral fins unite and form a ventral sucker for adhesion to stones and seaweeds. ... Synonym: lum …

lumpy jaw
Synonym for actinomycosis ... <microbiology> A chronic local or systemic granulomatous infection caused by the fungus Actinomyces bovis or israeli. ... Symptoms include: weight loss, weakness, fever and pain at site of infection. Signs: multiple draining sinuses. ... (27 Sep 1997) ...

lumpy skin disease
A poxvirus infection of cattle characterised by the appearance of nodules on all parts of the skin. ... (12 Dec 1998) ...

lumpy skin disease virus
<virology> A species of capripoxvirus causing a cattle disease occurring in africa. ... (12 Dec 1998) ...

luna
1. The moon. ... 2. <chemistry> Silver. ... <chemistry> Luna cornea, a very large and beautiful American moth (Actias luna). Its wings are delicate light green, with a stripe of purple along the front edge of the anterior wings, the other margins being edged with pale yellow. Each wing has a lunate spot surrounded by rings of light yellow …

Luna-Ishak stain
<technique> A staining method using celestine blue and acid fuchsin in which bile canaliculi stain pink to red. ... (05 Mar 2000) ...

lunacy
1. An obsolete term for a form of insanity characterised by alternating lucid and insane periods, believed to be influenced by phases of the moon. ... 2. Any form of insanity. ... 3. Insanity as defined variously by law. ... Origin: L. Luna, moon ... (05 Mar 2000) ...

lunar
1. Of or pertaining to the moon; as, lunar observations. ... 2. Resembling the moon; orbed. ... 3. Measured by the revolutions of the moon; as, a lunar month. ... 4. Influenced by the moon, as in growth, character, or properties; as, lunar herbs. ... <medicine> Lunar caustic Tables for correcting an observed lunar distance on account of refractio …

lunar caustic
Synonym for toughened silver nitrate ... Silver nitrate mixed with silver chloride and allowed to dry. Usually applied to the ends of small wooden applicator sticks or made available as pencils. These are used after wetting as a caustic chemical for the removal of warts. ... Synonym: fused silver nitrate, lunar caustic. ... (05 Mar 2000) ...

lunar periodicity
Any rhythmic phenomenon that follows a lunar or monthly cycle. ... (05 Mar 2000) ...

lunare
Synonym for lunate bone ... One of the proximal row in the carpus between the scaphoid and triquetral; it articulates with the radius, scaphoid, triquetral, hamate, and capitate. ... Synonym: os lunatum, lunare, os intermedium. ... (05 Mar 2000) ...

lunate
Crescent-shaped. ... (09 Oct 1997) ...

lunate bone
One of the proximal row in the carpus between the scaphoid and triquetral; it articulates with the radius, scaphoid, triquetral, hamate, and capitate. ... Synonym: os lunatum, lunare, os intermedium. ... (05 Mar 2000) ...

lunate cerebral sulcus
A small, inconstant semilunar groove on the cortical convexity near the occipital pole, marking the anterior border of the striate cortex (area 17) and considered homologous with the major sulcus of the same name that is a more constant feature of the cerebral cortex in monkeys and apes. ... Synonym: sulcus lunatus cerebri, ape fissure, lunate fissu …

lunate dislocation
A wrist joint injury characterised by dislocation of the lunate. ... (27 Sep 1997) ...

lunate fissure
Synonym for lunate cerebral sulcus ... A small, inconstant semilunar groove on the cortical convexity near the occipital pole, marking the anterior border of the striate cortex (area 17) and considered homologous with the major sulcus of the same name that is a more constant feature of the cerebral cortex in monkeys and apes. ... Synonym: sulcus luna …

lunate sulcus
Synonym for lunate cerebral sulcus ... A small, inconstant semilunar groove on the cortical convexity near the occipital pole, marking the anterior border of the striate cortex (area 17) and considered homologous with the major sulcus of the same name that is a more constant feature of the cerebral cortex in monkeys and apes. ... Synonym: sulcus luna …

lunate surface of acetabulum
The curved articular surface that surrounds the acetabular fossa and articulates with the head of the femur. ... Synonym: facies lunata acetabuli. ... (05 Mar 2000) ...

lunatic
An obsolete term for a mentally ill person. ... Origin: see lunacy ... (05 Mar 2000) ...

lunatomalacia
Synonym for Kienbock's disease ... Osteolysis of the lunate bone following trauma to the wrist. ... Synonym: lunatomalacia. ... (05 Mar 2000) ...

lune
1. Anything in the shape of a half moon. ... 2. <geometry> A figure in the form of a crescent, bounded by two intersecting arcs of circles. ... 3. A fit of lunacy or madness; a period of frenzy; a crazy or unreasonable freak. 'These dangerous, unsafe lunes i' the king.' (Shak) ... Origin: L. Luna moon: cf. F. Lune. See Luna. ... Source: Websters …

lunette
1. A fieldwork consisting of two faces, forming a salient angle, and two parallel flanks. See Bastion. ... 2. <veterinary> A half horseshoe, which wants the sponge. ... 3. A kind of watch crystal which is more than ordinarily flattened in the center; also, a species of convexoconcave lens for spectacles. ... 4. A piece of felt to cover the eye o …

lung
<anatomy> An organ for aerial respiration; commonly in the plural. 'My lungs began to crow like chanticleer.' (Shak) ... In all air-breathing vertebrates the lungs are developed from the ventral wall of the oesophagus as a pouch which divides into two sacs. In amphibians and many reptiles the lungs retain very nearly this primitive saclike cha …

lung abscess
A collection of pus within a cavity in the lung due to a bacterial infection (bacterial endocarditis). Certain bacteria (Staphylococcus, Pseudomonas, Tuberculosis, Klebsiella) are more likely to cavitate the lung and cause abscess formation. ... (27 Sep 1997) ...

lung bud
Synonym for tracheobronchial diverticulum ... The endodermal lung primordium which will give rise to the epithelial lining of the respiratory tract. ... Synonym: lung bud. ... (05 Mar 2000) ...

lung cancer
A cancerous growth in lung tissue. Lung cancer may be metastatic from another source (colon) or may be primary (tumour is of lung cell origin). Classification is based on the type of cell the lung cancer originates from (adenocarcinoma, alveolar cell carcinoma, squamous cell carcinoma, large cell and small cell carcinomas). ... (27 Sep 1997) ...

lung compliance
The pulmonary volume change per unit pressure change. While clearly not a complete description of the pressure-volume properties of the lung, it is nevertheless useful in practice as a measure of the comparative stiffness of the lung. The stiffer the lung, the less the compliance. Compliance is reduced by diseases which cause an accumulation of fib …

lung diseases, interstitial
A heterogeneous group of noninfectious, nonmalignant disorders of the lower respiratory tract, affecting primarily the alveolar wall structures but also often involving the small airways and blood vessels of the lung parenchyma. 'interstitial' refers to the fact that the interstitium of the alveolar walls is thickened, usually by fibrosis. This gro …

lung diseases, obstructive
Any disorder marked by persistent obstruction of bronchial air flow. ... (12 Dec 1998) ...

lung diseases, parasitic
Infections of the lungs with a parasite. They are caused most commonly by nematodes (roundworms). ... (12 Dec 1998) ...

lung fluke disease
Infection with the lung fluke, Clonorchis sinensis. ... (05 Mar 2000) ...

lung foreign body
Any object or material that does not belong in the respiratory tree. Lung foreign bodies most often result from the accidental aspiration of an object or food particle. ... (27 Sep 1997) ...

lung perfusion agents
<radiology> Tc-99m MAA (macro-aggregated albumin), Tc-99m HAM (human albumin microspheres), dose 4 mCi, particles, size 10 - 90 m, number 200,000 - 400,000, effect 1 : 1000 arterioles embolised ... (12 Dec 1998) ...

lung segmental anatomy
<radiology> Right lung, 3 lobes, 10 segments, left lung, 2 lobes, 8 segments ... (12 Dec 1998) ...

lung transplantation
The transference of either one or both of the lungs from one human or animal to another. ... (12 Dec 1998) ...

lung unit
A respiratory bronchiole together with the alveolar ducts and sacs and pulmonary alveoli into which the respiratory bronchiole leads, considered by some to include the terminal bronchiole and its subdivisions, and called a pulmonary acinus. ... (05 Mar 2000) ...

lung ventilation agents
<radiology> Xe-133, most commonly used, Xe-127, t = 36.4 days; photons @ 172, 203, 375 keV, can image V after Q, Kr-81m, very expensive, t = 13 sec; photon 190 keV, can repeat V in each projection, Tc-99m DTPA aerosol, can image V in mult. Projections, image Q after V, 1 mCi most likely to be 50-75 mrad to lung, V/Q imaging ... (12 Dec 1998)
lung volume measurements
Measurement of the amount of air that the lungs may contain at various points in the respiratory cycle. ... (12 Dec 1998) ...

lung window
CT settings of window level and width appropriate to showing lung detail; soft tissues are white or nearly so. ... Mediastinal window, CT settings of window level and width appropriate to showing soft tissue structures; the lungs become black at these settings. ... Synonym: soft tissue window. ... (05 Mar 2000) ...

lung, hyperlucent
Hyperlucency of one lung with decreased size and vascularity of the lung. It is often associated with bronchiolitis obliterans and with adenovirus infection in childhood. ... (12 Dec 1998) ...

lungs
The lungs are a pair of breathing organs located with the chest which remove carbon dioxide from and bring oxygen to the blood. There is a right and left lung. ... (12 Dec 1998) ...

lungworms
Nematodes that inhabit the air passages of animals, chiefly in the family Metastrongylidae (or Protostrongylidae). ... See: Aelurostrongylus, Crenosoma vulpis, Dictyocaulus, Metastrongylus, Muellerius capillaris, Protostrongylus rufescens. ... (05 Mar 2000) ...

lungwort
<botany> An herb of the genus Pulmonaria (P. Officinalis), of Europe; so called because the spotted appearance of the leaves resembles that of a diseased lung. ... Any plant of the genus Mertensia (especially. M. Virginica and M. Sibirica) plants nearly related to Pulmonaria. The American lungwort is Mertensia Virginica, Virginia cowslip. Cow' …

lunisolar
Resulting from the united action, or pertaining to the mutual relations, of the sun and moon. ... <astronomy> Lunisolar precession, that portion of the annual precession of the equinoxes which depends on the joint action of the sun and moon. Lunisolar year, a period of time, at the end of which, in the Julian calendar, the new and full moons a …

lunula of semilunar valve
The free border of a semilunar valve at each side of the nodulus valvulae semilunaris. ... Synonym: lunula valvulae semilunaris. ... (05 Mar 2000) ...

lunula valvulae semilunaris
Synonym for lunula of semilunar valve ... The free border of a semilunar valve at each side of the nodulus valvulae semilunaris. ... Synonym: lunula valvulae semilunaris. ... (05 Mar 2000) ...

lunule
1. <anatomy> Anything crescent-shaped; a crescent-shaped part or mark; a lunula, a lune. ... 2. <chemistry> A lune. See Lune. ... 3. <zoology> A small or narrow crescent. A special area in front of the beak of many bivalve shells. It sometimes has the shape of a double crescent, but is oftener heart-shaped. ... Origin: F, fr. L. Lunu …

Lunyo virus
An atypical strain of Rift Valley fever virus. ... (05 Mar 2000) ...

lupanine hydroxylase
<enzyme> A pyrroloquinoline quinone enzyme ... Registry number: EC 1.4.99.- ... Synonym: lupanine 17-hydroxylase ... (26 Jun 1999) ...

lupiform
Synonym for lupoid ... Resembling lupus. ... Synonym: lupiform. ... Origin: L. Lupus + G. Eidos, resemblance ... (05 Mar 2000) ...

lupine
Relating to, affecting, resembling or derived from a wolf. ... (09 Oct 1997) ...

lupinosis
Synonym: lathyrism. ... Origin: L. Lupinus, lupine, fr. Lupus, wolf ... (05 Mar 2000) ...

lupoid
Resembling lupus. ... Synonym: lupiform. ... Origin: L. Lupus + G. Eidos, resemblance ... (05 Mar 2000) ...

lupoid hepatitis
<pathology> A type of chronic active hepatitis that results from circulating auto-antibodies and chronic inflammation of the liver. ... Symptoms are those of chronic active hepatitis. ... (27 Sep 1997) ...

lupoid leishmaniasis
Synonym for leishmaniasis recidivans ... A partially healing leishmanial lesion caused by Leishmania tropica and characterised by an extreme form of cellular immune response, intense granuloma production, fibrinoid necrosis without caseation, and frequent development of satellite lesions that continue the production of granulomatous tissue without h …

lupoid sycosis
A papular or pustular inflammation of the hair follicles of the beard, followed by punctuate scarring and loss of the hair. ... Synonym: ulerythema sycosiforme. ... Sycosis nuchae necrotisans, acne keloid on the back of the neck at the hairline. ... (05 Mar 2000) ...

lupoid ulcer
An ulcer resembling that of cutaneous tuberculosis. ... (05 Mar 2000) ...

lupous
Relating to lupus. ... (05 Mar 2000) ...

lupus
A systemic disease that results from an autoimmune mechanism. Individuals with lupus will produce antibodies to their own body tissues. The resultant inflammation can cause kidney damage, arthritis, pericarditis and vasculitis. ... (27 Sep 1997) ...

lupus anticoagulant
An immunoglobulin that interferes with blood coagulation and has antithromboplastin activity. This immunoglobulin can prolong blood clotting and occurs in approximately 25% of people with lupus. ... (27 Sep 1997) ...

lupus anticoagulants
Lupus anticoagulants are a common cause of a prolonged activated partial thromboplastin time (APTT) which is corrected by the addition of platelet -rich plasma (or phospholipids) and not by platelet-poor plasma. The methods of choice for detection of lupus anticoagulants are the kaolin clotting time using the rabbit brain neutralisation procedure a …

lupus band test
A direct immunofluorescent technique for demonstrating a band of immunoglobulins at the dermal-epidermal junction of the skin of patients with lupus erythematosus. ... (05 Mar 2000) ...

lupus coagulation inhibitor
An antiphospholipid antibody found in association with systemic lupus erythematosus (lupus erythematosus, systemic), antiphospholipid syndrome, and in a variety of other diseases as well as in healthy individuals. In vitro, the antibody interferes with the conversion of prothrombin to thrombin and prolongs the partial thromboplastin time. In vivo, …

lupus erythematodes
Synonym for lupus erythematosus ... Skin disease in which there are red scaly patches, especially over the nose and cheeks. May be a symptom of systemic lupus erythematosus. ... (18 Nov 1997) ...

lupus erythematosus
Skin disease in which there are red scaly patches, especially over the nose and cheeks. May be a symptom of systemic lupus erythematosus. ... (18 Nov 1997) ...

lupus erythematosus cell
Synonym for LE cell ... <pathology> Phagocyte that has ingested nuclear material of another cell: characteristic of systemic lupus erythematosus. ... (18 Nov 1997) ...

lupus erythematosus cell test
Synonym for le cell test ... <investigation> A test for lupus that measures the presence of autoantibodies against nuclear proteins in the blood. Performed on a normal venipuncture specimen, this test is positive in 70 to 80% of patients with lupus. Some patients with rheumatoid arthritis, scleroderma and drug-induced lupus may also have a pos …

lupus erythematosus profundus
A subcutaneous panniculitis with marked lymphocyte infiltration of fat lobules giving rise to deep-seated, firm, rubbery nodules that sometimes become ulcerated, usually of the face; may occur in systemic and localised lupus erythematosus. ... Synonym: lupus profundus. ... (05 Mar 2000) ...

lupus erythematosus test
<investigation> A test for lupus that measures the presence of autoantibodies against nuclear proteins in the blood. Performed on a normal venipuncture specimen, this test is positive in 70 to 80% of patients with lupus. Some patients with rheumatoid arthritis, scleroderma and drug-induced lupus may also have a positive test result. ... (27 Se …

lupus erythematosus, cutaneous
A form of lupus erythematosus in which the skin may be the only organ involved or in which skin involvement precedes the spread into other body systems. It has been classified into three forms - acute (= lupus erythematosus, systemic with skin lesions), subacute, and chronic (= lupus erythematosus, discoid). ... (12 Dec 1998) ...

lupus erythematosus, discoid
A chronic form of cutaneous lupus erythematosus (lupus erythematosus, cutaneous) in which the skin lesions mimic those of the systemic form but in which systemic signs are rare. It is characterised by the presence of discoid skin plaques showing varying degrees of oedema, erythema, scaliness, follicular plugging, and skin atrophy. Lesions are surro …

lupus erythematosus, systemic
A chronic, relapsing, inflammatory, and often febrile multisystemic disorder of connective tissue, characterised principally by involvement of the skin, joints, kidneys, and serosal membranes. It is of unknown aetiology, but is thought to represent a failure of the regulatory mechanisms of the autoimmune system. The disease is marked by a wide rang …

lupus glomerulonephritis-pathology
Patient survival and preservation of renal function are predictable from renal pathology as demonstrated by biopsy and defined by the histological classification of the International Study of Kidney Disease in Children/World Health Organization (ISKDC/WHO). Semi-quantitative indices of nephron loss (chronicity index) and activity of acute potential …

lupus livido
Persistent cyanotic lesions on the extremities, associated with the cutaneous manifestations of Raynaud's disease. ... (05 Mar 2000) ...

lupus lymphaticus
Synonym for lymphangioma circumscriptum ... A congenital nevoid lesion consisting of a circumscribed group of tense lymph vesicles. ... Synonym: lupus lymphaticus, lymphangiectodes, lymphangioma capillare varicosum, lymphangioma superficium simplex. ... (05 Mar 2000) ...

lupus miliaris disseminatus faciei
A millet-like papular eruption of the face, associated with a (histopathologically) tuberculoid perifollicular infiltration, but probably related to rosacea rather than tuberculous infection. ... (05 Mar 2000) ...

lupus mutilans
Cutaneous tuberculosis with extensive destruction of tissue. ... (05 Mar 2000) ...

lupus nephritis
Glomerulonephritis associated with systemic lupus erythematosus. It is classified into four histologic types: mesangial, focal, diffuse, and membranous. ... (12 Dec 1998) ...

lupus papillomatosus
Synonym for tuberculosis cutis verrucosa ... A tuberculous skin lesion having a warty surface with a chronic inflammatory base seen on the hands in adults and lower extremities in children, with marked hypersensitivity to tuberculous antigens. ... See: postmortem wart. ... Synonym: lupus papillomatosus, lupus verrucosus, tuberculous wart, verrucous sc …

lupus pernio
Sarcoid lesions, clinically resembling frostbite and microscopically resembling lupus vulgaris, involving ears, cheeks, nose, hands, and fingers. ... (05 Mar 2000) ...

lupus profundus
Synonym for lupus erythematosus profundus ... A subcutaneous panniculitis with marked lymphocyte infiltration of fat lobules giving rise to deep-seated, firm, rubbery nodules that sometimes become ulcerated, usually of the face; may occur in systemic and localised lupus erythematosus. ... Synonym: lupus profundus. ... (05 Mar 2000) ...

lupus sebaceus
Lupus erythematosus with lesions on the face in butterfly areas. ... (05 Mar 2000) ...

lupus serpiginosus
A cutaneous tuberculous lesion that spreads peripherally, healing centrally with scar formation. ... (05 Mar 2000) ...

lupus superficialis
Synonym for lupus erythematosus ... Skin disease in which there are red scaly patches, especially over the nose and cheeks. May be a symptom of systemic lupus erythematosus. ... (18 Nov 1997) ...

lupus tuberculosus
Synonym for lupus vulgaris ... Cutaneous tuberculosis with characteristic nodular lesions on the face, particularly about the nose and ears. ... Synonym: lupus tuberculosus, tuberculosis cutis luposa. ... (05 Mar 2000) ...

lupus verrucosus
Synonym for tuberculosis cutis verrucosa ... A tuberculous skin lesion having a warty surface with a chronic inflammatory base seen on the hands in adults and lower extremities in children, with marked hypersensitivity to tuberculous antigens. ... See: postmortem wart. ... Synonym: lupus papillomatosus, lupus verrucosus, tuberculous wart, verrucous sc …

lupus vulgaris
Cutaneous tuberculosis with characteristic nodular lesions on the face, particularly about the nose and ears. ... Synonym: lupus tuberculosus, tuberculosis cutis luposa. ... (05 Mar 2000) ...

lupus-like syndrome
<syndrome> A clinical syndrome resembling that of systemic lupus erythematosus, but due to some other cause. ... (05 Mar 2000) ...

LUQ
<abbreviation> Left upper quadrant (of abdomen). ... (05 Mar 2000) ...

lura
The contracted termination of the infundibulum of the brain. ... Origin: L. The mouth of a bottle ... (05 Mar 2000) ...

lural
Pertaining to the lura. ... (05 Mar 2000) ...