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

lurid
1. Pale yellow; ghastly pale; wan; gloomy; dismal. 'Fierce o'er their beauty blazed the lurid flame.' (Thomson) 'Wrapped in drifts of lurid smoke On the misty river tide.' (Tennyson) ... 2. <botany> Having a brown colour tonged with red, as of flame seen through smoke. ... 3. <zoology> Of a colour tinged with purple, yellow, and gray. ... …

Luschka, Hubert
<person> German anatomist, 1820-1875. ... See: Luschka's bursa, Luschka's cartilage, Luschka's ducts, Luschka's gland, Luschka's cystic glands, Luschka's joints, Luschka's ligaments, Luschka's sinus, Luschka's tonsil, foramen of Luschka. ... (05 Mar 2000) ...

Luschka's bursa
Synonym for pharyngeal bursa ... <anatomy> A cystic notochordal remnant found inconstantly in the posterior wall of the nasopharynx at the lower end of the pharyngeal tonsil. ... Synonym: bursa pharyngea, Luschka's bursa, Tornwaldt's cyst. ... (05 Mar 2000) ...

Luschka's cartilage
A small cartilaginous nodule sometimes found in the anterior portion of the vocal cord. ... (05 Mar 2000) ...

Luschka's cystic glands
Synonym for glands of biliary mucosa ... Small, mucous, tubuloalveolar glands in the mucosa of the larger bile ducts and especially in the neck of the gallbladder. ... Synonym: glandulae mucosae biliosae, Luschka's cystic glands, Theile's glands. ... (05 Mar 2000) ...

Luschka's ducts
Glandlike tubular structures in the wall of the gallbladder, especially in the part covered with peritoneum. ... (05 Mar 2000) ...

Luschka's gland
Former name for corpus coccygeum. ... (05 Mar 2000) ...

Luschka's joints
Synonym for uncovertebral joints ... Small synovial joint's between adjacent lateral lips of the bodies of the lower cervical vertebrae. ... Synonym: Luschka's joints. ... (05 Mar 2000) ...

Luschka's ligaments
Synonym for sternopericardial ligament ... <anatomy> Fibrous bands that pass from the pericardium to the sternum. ... Synonym: ligamenta sternopericardiaca, Lannelongue's ligaments, Luschka's ligaments. ... (05 Mar 2000) ...

Luschka's tonsil
Synonym for pharyngeal tonsil ... A collection of more or less closely aggregated lymphoid nodules on the posterior wall and roof of the nasopharynx, the hypertrophy of which constitutes the morbid condition called adenoids. ... Synonym: tonsilla pharyngealis, tonsilla adenoidea, Luschka's gland, Luschka's tonsil, third tonsil. ... (05 Mar 2000) ...

Luse bodies
Collagen fibres with abnormally long spacing (exceeding 1000 A°) between electron-dense bands. ... (05 Mar 2000) ...

Luse, Sarah
<person> 20th century U.S. Physician. ... See: Luse bodies. ... (05 Mar 2000) ...

lust
1. To list; to like. ' Do so if thou lust. ' ... In earlier usage lust was impersonal. 'In the water vessel he it cast When that him luste.' (Chaucer) ... 2. To have an eager, passionate, and especially an inordinate or sinful desire, as for the gratification of the sexual appetite or of covetousness; often with after. 'Whatsoever thy soul lusteth af …

lustre
1. Brilliancy; splendor; brightness; glitter. 'The right mark and very true luster of the diamond.' (Sir T. More) 'The scorching sun was mounted high, In all its luster, to the noonday sky.' (Addison) ... There is a tendency to limit the use of luster, in this sense, to the brightness of things which do not shine with their own light, or at least do …

lute
A stringed instrument formerly much in use. It consists of four parts, namely, the table or front, the body, having nine or ten ribs or 'sides,' arranged like the divisions of a melon, the neck, which has nine or ten frets or divisions, and the head, or cross, in which the screws for tuning are inserted. The strings are struck with the right hand, …

luteal
Relating to the corpus luteum; luteal cells, luteal hormone, etc. ... Synonym: luteus. ... Origin: L. Luteus, saffron-yellow ... (05 Mar 2000) ...

luteal cell
A cell of the corpus luteum of the ovary that is derived from the granulosa cells of the preovulatory follicle; it secretes progesterone and oestrogen. ... (05 Mar 2000) ...

luteal phase
The post-ovulatory phase of a woman's cycle, the corpus luteum produces progesterone, which in turn causes the uterine lining to secrete substances to support the implantation and growth of the early embryo. ... (09 Oct 1997) ...

luteal phase defect
Inadequate function of the corpus luteum that may prevent a fertilized egg from implanting in the uterus or may lead to early pregnancy loss. ... (09 Oct 1997) ...

luteal phase deficiency
Synonym for luteal phase defect ... Inadequate function of the corpus luteum that may prevent a fertilized egg from implanting in the uterus or may lead to early pregnancy loss. ... (09 Oct 1997) ...

lutecium
Synonym for lutetium ... <chemical> Lutetium. An element of the rare earth family of metals. It has the atomic symbol lu, atomic number 71, and atomic weight 175. ... Chemical name: Lutetium ... (12 Dec 1998) ...

lutein cells
The cells of the corpus luteum which are derived from the granulosa cells and the theca cells of the graafian follicle. ... (12 Dec 1998) ...

luteinise
To form luteal tissue. ... (05 Mar 2000) ...

luteinising hormone
<endocrinology> A glycoprotein hormone (26 kD) and gonadotrophin. Made up of an _ chain (96 amino acids) identical to other gonadotrophins and a hormone specific _ chain. Acts with follicle-stimulating hormone to stimulate sex hormone release. ... (18 Nov 1997) ...

luteinization
Transformation of the mature ovarian follicle and its theca interna into a corpus luteum after ovulation; formation of luteal tissue, which appears yellow in some species. ... (05 Mar 2000) ...

luteinizing hormone
Synonym for lutropin ... <protein> Synonym for luteinising hormone. ... (18 Nov 1997) ...

luteinizing principle
Synonym for lutropin ... <protein> Synonym for luteinising hormone. ... (18 Nov 1997) ...

luteinoma
Synonym for luteoma ... A benign ovarian tumour of granulosa or theca-lutein cell origin, producing progesterone effects on the uterine mucosa. ... (12 Dec 1998) ...

lutembacher syndrome
<syndrome> Atrial septal defect and mitral stenosis, increased pulmonary blood flow, cephalization (PVH) ... (12 Dec 1998) ...

Lutembacher, Rene
<person> French cardiologist, 1884-1916. ... See: Lutembacher's syndrome. ... (05 Mar 2000) ...

lutembacher's syndrome
<syndrome> A combination of atrial septal defect and mitral stenosis. ... (12 Dec 1998) ...

luteo-
<chemistry, prefix> A combining form signifying orange yellow or brownish yellow. ... Origin: L. Luteus. ... (29 Oct 1998) ...

luteogenic
Luteinizing; inducing the production or growth of corpora lutea. ... (05 Mar 2000) ...

luteol
Synonym for xanthophyll ... <chemical> Any of several yellow accessory pigments which found in plant leaves, egg yolks and human blood plasma, these pigments are oxygenated derivatives of carotenes and are involved in photosynthesis, for example lutein, violaxanthin and neoxanthine. ... (11 May 1997) ...

luteolysin
Any agent, natural or compounded, that destroys the function of the corpus luteum. ... Origin: L. Luteus, saffron-yellow, + G. Lysis, dissolution ... (05 Mar 2000) ...

luteolysis
Degeneration or destruction of ovarian luteinised tissue. ... (05 Mar 2000) ...

luteolytic
Promoting or characteristic of luteolysis. ... (05 Mar 2000) ...

luteolytic agents
Chemical compounds causing corpus luteum regression or degeneration. ... (12 Dec 1998) ...

luteoma
A benign ovarian tumour of granulosa or theca-lutein cell origin, producing progesterone effects on the uterine mucosa. ... (12 Dec 1998) ...

luteoplacental shift
The change in site of production of the oestrogen and progesterone essential for human pregnancy from the corpus luteum to the placenta; ovariectomy always terminates pregnancy in most mammals because their placentas never produce enough oestrogen and progesterone, but, after the sixth week of pregnancy, a human placenta can produce enough of these …

luteotropic
Luteotrophic ... Having a stimulating action on the development and function of the corpus luteum. ... (05 Mar 2000) ...

luteotropic hormone
Synonym for luteotropin ... An anterior pituitary hormone whose action maintains the function of the corpus luteum. ... Synonym: luteotropic hormone. ... (05 Mar 2000) ...

luteotropin
An anterior pituitary hormone whose action maintains the function of the corpus luteum. ... Synonym: luteotropic hormone. ... (05 Mar 2000) ...

luteovirus
A group of plant viruses that infects both monocotyledonous and dicotyledonous plants. Its organisms are persistently transmitted by aphids, and weeds may provide reservoirs of infection. ... (12 Dec 1998) ...

lutetium
<chemical> Lutetium. An element of the rare earth family of metals. It has the atomic symbol lu, atomic number 71, and atomic weight 175. ... Chemical name: Lutetium ... (12 Dec 1998) ...

luteus
Synonym: luteal, luteal. ... Origin: L. ... (05 Mar 2000) ...

lutheran blood-group system
A complex blood group system having pairs of alternate antigens and amorphic genes, but also subject to a dominant independently segregating repressor. ... (12 Dec 1998) ...

luting agent
A fastening material or cement; e.g., plaster or wax to hold casts to an articulator, or material to hold crowns to teeth. ... (05 Mar 2000) ...

lutropin
<protein> Synonym for luteinising hormone. ... (18 Nov 1997) ...

lututrin
A water-soluble protein-like fraction extracted from the corpus luteum of sows' ovaries, resembling relaxin; it causes uterine relaxation and is used in dysmenorrhoea. ... (05 Mar 2000) ...

Lutz-Splendore-Almeida disease
Synonym for paracoccidioidomycosis ... A mycosis affecting the skin, mucous membranes, lymph nodes, and internal organs. It is caused by paracoccidioides brasiliensis. It is also called paracoccidioidal granuloma. ... (12 Dec 1998) ...

Lutz, Alfredo
<person> Brazilian physician, 1855-1940. ... See: Lutz-Splendore-Almeida disease. ... (05 Mar 2000) ...

Lutzomyia
A genus of New World sandflies or bloodsucking midges (family Psychodidae) that serve as vectors of leishmaniasis and Oroyo fever; formerly combined with the Old World sandfly genus Phlebotomus. ... (05 Mar 2000) ...

Lutzomyia flaviscutellata
A sandfly species that is a vector of Leishmania mexicana, the agent of chiclero's ulcer. ... Synonym: Phlebotomus flaviscutellatus. ... (05 Mar 2000) ...

Lutzomyia intermedius
One of a group of sandfly species that are vectors of Leishmania braziliensis, the agent of espundia. ... (05 Mar 2000) ...

Lutzomyia longipalpis
Synonym for Phlebotomus longipalpis ... A vector of kala azar in South America. ... Synonym: Lutzomyia longipalpis. ... (05 Mar 2000) ...

Lutzomyia peruensis
A sandfly species that is a vector of Leishmania peruviana, the agent of uta. ... (05 Mar 2000) ...

lux
A unit of light or illumination; the reception of a luminous flux of 1 lumen per square meter of surface. ... Synonym: candle-meter, meter-candle. ... Abbreviation: lx ... Origin: L. Light ... (05 Mar 2000) ...

luxatio
Synonym for dislocation ... <orthopaedics> The displacement of any part, more especially of a bone. ... Synonym: luxation. ... Origin: L. Locare = to place ... (18 Nov 1997) ...

luxatio erecta
Subglenoid dislocation of the head of the humerus; the arm is raised and abducted and cannot be lowered. ... (05 Mar 2000) ...

luxatio perinealis
A condition in which the head of the femur is dislocated to the perineum. ... (05 Mar 2000) ...

luxation
Complete dislocation of a joint. A partial dislocation is a subluxation. ... (12 Dec 1998) ...

Luxol fast blue
Name for a group of closely related copper phthalocyanin dyes used as stains (with PAS, PTAH, haematoxylin, silver nitrate, etc.) for myelin in nerve fibres. ... (05 Mar 2000) ...

luxuriant
Exuberant in growth; rank; excessive; very abundant; as, a luxuriant growth of grass; luxuriant foliage. 'Prune the luxuriant, the uncouth refine. ... <botany> ' (Pope) Luxuriant flower, one in which the floral envelopes are overdeveloped at the expense of the essential organs. ... Origin: L. Luxurians, p. Pr. Of luxuriare: cf. F. Luxuriant. Se …

luxury
Origin: L. Luxuria, fr. Luxus: cf. F. Luxure. ... 1. A free indulgence in costly food, dress, furniture, or anything expensive which gratifies the appetites or tastes. 'Riches expose a man to pride and luxury.' (Spectator) ... 2. Anything which pleases the senses, and is also costly, or difficult to obtain; an expensive rarity; as, silks, jewels, and …

luxury protein
A term sometimes used to describe those proteins that are produced specifically for the function of differentiated cells and are not required for general cell maintenance (the so called housekeeping proteins). ... (18 Nov 1997) ...

luxus
Excess of any sort. ... Origin: L. Extravagance, luxury ... (05 Mar 2000) ...

Luys, Jules
<person> French physician, 1828-1897. ... See: Luys' body, centre median de Luys, corpus luysi, nucleus of Luys. ... (05 Mar 2000) ...

LVET
<abbreviation> Left ventricular ejection time. ... (05 Mar 2000) ...

Lw
Former symbol for lawrencium. ... (05 Mar 2000) ...

lx
<abbreviation> Lux. ... (05 Mar 2000) ...

lyase
<enzyme> An enzyme of the EC Class 4, that strips a group from a molecule to form a double bond or adds a group to a double bond. ... A lyase catalyses the nonhydrolytic removal of a group from a substrate with the resulting formation of a double bond. The reverse reaction is performed by a synthetase. ... The group include decarboxylases, aldo …

lyases
<enzyme> A class of enzymes that catalyze the cleavage of c-c, c-o, and c-n, and other bonds by other means than by hydrolysis or oxidation. ... Registry number: EC 4. ... (12 Dec 1998) ...

Lyb antigen
Surface antigens of mouse B-cells. ... (18 Nov 1997) ...

lychnis
<botany> A genus of Old World plants belonging to the Pink family (Caryophyllaceae). most of the species have brilliantly coloured flowers and cottony leaves, which may have anciently answered as wicks for lamps. The botanical name is in common use for the garden species. The corn cockle (Lychnis Githago) is a common weed in wheat fields. ... …

lycoctonine
An alkaloid, C25H41NO7, obtained from Aconitum lycoctonum, an exceedingly poisonous species of aconite; it also occurs in other species of Aconitum and Delphinium. ... (05 Mar 2000) ...

lycopenaemia
A condition in which there is a high concentration of lycopene in the blood, producing carotenoid-like yellowish pigmentation of the skin; found in people who consume excessive amounts of tomatoes or tomato juice, or lycopene-containing fruits and berries. ... Origin: Lycopene + G. Haima, blood ... (05 Mar 2000) ...

lycopene
<chemical> A linear, unsaturated hydrocarbon carotenoid (536D), the major red pigment in some fruit. ... (18 Nov 1997) ...

lycopene cyclase-isomerase
<enzyme> Found in bacteria chloroplasts; both isomerization and cyclization takes place; NADPH is essential cofactor; may be route to formation of alpha and beta carotene; has been sequenced; genbank d83513 ... Registry number: EC 5.5.- ... Synonym: crty protein, lycopene cyclase, crtl gene product, lycopene beta-cyclase ... (26 Jun 1999) ...

lycoperdonosis
A persisting pneumonitis following inhalation of spores of the puffballs Lycoperdon pyriforme and L. Bovista. ... (05 Mar 2000) ...

lycophora
The 10-hooked larva of primitive tapeworms of the subclass Cestodaria. ... (05 Mar 2000) ...

lycopodium
<botany> A genus of mosslike plants, the type of the order Lycopodiaceae; club moss. Lycopodium powder, a fine powder or dust composed of the spores of Lycopodium, and other plants of the order Lycopodiaceae. It is highly inflammable, and is sometimes used in the manufacture of fireworks, and the artificial representation of lightning. ... Ori …

Lyell
Aian. ... See: Lyell's disease, Lyell's syndrome. ... (05 Mar 2000) ...

Lyell's disease
Synonym for staphylococcal scalded skin syndrome ... <syndrome> A disease of infants due to group 2 phage type 17 staphylococci that produce an epidermolytic exotoxin. Superficial fine vesicles and bullae form and rupture easily, resulting in loss of large sheets of epidermis. ... (12 Dec 1998) ...

Lyell's syndrome
Synonym for toxic epidermal necrolysis ... A syndrome in which a large portion of the skin becomes intensely erythematous with epidermal necrosis, and peels off in the manner of a second-degree burn, often simultaneous with the formation of flaccid bullae, resulting from drug sensitivity or of unknown cause; the level of separation is subepidermal, …

lygodium
<botany> A genus of ferns with twining or climbing fronds, bearing stalked and variously-lobed divisions in pairs. ... Lygodium palmatum, much prized for indoor ornament, inhabits shaded and moist grassy places, from Massachusetts to Virginia and Kentucky, and sparingly southwards. ... Origin: NL, fr. Gr. Flexible; a willow twig + form. ... Sour …

lygophilia
Morbid preference for dark places. ... Origin: G. Lyge, twilight, + phileo, to love ... (05 Mar 2000) ...

lyme arthritis
<radiology> Migratory polyarthritis, common in New England (named for Lyme, Conn.), spirochete (Borrelia) transmitted by tick (Ixodes dammini), joint effusion, especially knee (may be only finding), skin lesions: erythema chronicum migrans ... (12 Dec 1998) ...

Lyme borreliosis
Synonym for lyme disease ... <infectious disease> A bacterial disease caused by the micro-organism (spirochete) Borrelia burgdorferi. This bacterium was discovered in 1982, although the clinical disease was first described in 1977. Infection occurs after the bite of an infected tick. The incubation period is approximately 14 days. ... Symptoms …

lyme disease
<infectious disease> A bacterial disease caused by the micro-organism (spirochete) Borrelia burgdorferi. This bacterium was discovered in 1982, although the clinical disease was first described in 1977. Infection occurs after the bite of an infected tick. The incubation period is approximately 14 days. ... Symptoms include a large circular red …

lyme disease antibody
A blood test which measures for the presence of Lyme disease antibodies. A nonreactive or serum titre of less than 1:256 is normal. A rising titre over time is more diagnostic. False positives due occur in those with rheumatoid arthritis and lupus. ... (27 Sep 1997) ...

lyme disease serology
A blood test which measures for the presence of Lyme disease antibodies. A nonreactive or serum titre of less than 1:256 is normal. A rising titre over time is more diagnostic. False positives due occur in those with rheumatoid arthritis and lupus. ... (27 Sep 1997) ...

lymecycline
<chemical> (4s-(4 alpha,4a alpha,5a alpha,6 beta,12a alpha-n(6)-((((4-(dimethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,6,10,12,12a-pentahydroxy-6-methyl-1,11-dioxo-2-naphthacenyl)carbonyl)amino)methyl)-l-lysine. A semisynthetic antibiotic related to tetracycline. It is more readily absorbed than tetracycline and can therefore be given in lowe …

lymnaea
A genus of dextrally coiled freshwater snails that includes some species of importance as intermediate hosts of parasitic flukes. ... (12 Dec 1998) ...

lymph
<physiology> The almost colourless fluid that bathes body tissues and is found in the lymphatic vessels that drain the tissues of the fluid that filters across the blood vessel walls from blood. Lymph carries lymphocytes that have entered the lymph nodes from the blood. ... (12 May 1997) ...

lymph capillary
The beginning of the lymphatic system of vessels; it is lined with a highly attenuated endothelium with poorly developed basement membrane and a lumen of variable caliber. ... See: lacteal. ... (05 Mar 2000) ...

lymph cell
Synonym for lymphocyte ... <haematology> White cell of the blood that are derived from stem cells of the lymphoid series. ... Two main classes are recognised, T and B lymphocytes, the latter responsible (when activated) for production of antibody, the former subdivided into subsets (helper, suppressor, cytotoxic T-cells) and responsible both fo …

lymph circulation
The slow passage of lymph through the lymphatic vessels and glands. ... (05 Mar 2000) ...

lymph cords
Synonym for medullary cords ... Cord's of dense lymphoid tissue between the sinuses in the medulla of a lymph node. ... Synonym: lymph cords. ... (05 Mar 2000) ...

lymph corpuscle
Lymphatic corpusclelymphoid corpuscle, a mononuclear type of leukocyte formed in lymph nodes and other lymphoid tissue, and also in the blood. ... (05 Mar 2000) ...