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

lower respiratory tract smear
A group of cytologic specimens containing material from the lower respiratory tract and consisting mainly of sputum (spontaneous, induced) and material obtained at bronchoscopy (aspirated, lavaged, brushed); used for cytologic study of cancer and other diseases of the lungs. ... Synonym: bronchoscopic smear, sputum smear. ... (05 Mar 2000) ...

lower segment cesarian section
A Cesarian section in which the surgical incision (cut) is made in the lower segment of the uterus. ... (12 Dec 1998) ...

lower uterine segment
The inferior portion or isthmus of the uterus, the lower extremity of which joins with the cervical canal and, during pregnancy, expands to become the lower part of the uterine cavity. ... (05 Mar 2000) ...

Lower, Richard
<person> English anatomist and physiologist, 1631-1691. ... See: Lower's ring, Lower's tubercle. ... (05 Mar 2000) ...

Lower's ring
Synonym for fibrous ring of heart ... One of four fibrous rings that surround atrioventricular and arterial orifices of the heart, providing attachment for the valve leaflets and maintaining patency of the orifice. As part of the fibrous skeleton of the heart, the fibrous rings also provide origin and insertion for the myocardium. ... Synonym: annulu …

Lower's tubercle
Synonym for intervenous tubercle ... The slight projection on the wall of the right atrium between the orifices of the venae cavae. ... Synonym: tuberculum intervenosum, Lower's tubercle. ... (05 Mar 2000) ...

lowest achievable emissions rate
(LAER) Used to describe air emissions control technology. A rate of emissions defined by the permitting agency. LEAR sets emission limits for non-attainment areas. ... (05 Dec 1998) ...

lowest lumbar arteries
Origin, middle sacral; distribution, sacrum and iliac muscle; anastomosis, deep circumflex iliac artery. ... Synonym: arteriae lumbales imae. ... (05 Mar 2000) ...

lowest splanchnic nerve
<anatomy, nerve> One of the abdominopelvic splanchnic nerves arising in the thorax and penetrating the diaphragm to supply presynaptic sympathetic fibres for the renal plexus; often combined with the lesser splanchnic nerve, but occasionally existing as an independent nerve. ... Synonym: nervus splanchnicus imus, smallest splanchnic nerve. ... …

lowest thyroid artery
Synonym for thyroid ima artery ... <anatomy, artery> An inconstant artery; origin, arch of aorta or brachiocephalic artery; distribution, thyroid gland. ... Synonym: arteria thyroidea ima, lowest thyroid artery, Neubauer's artery. ... (05 Mar 2000) ...

lowly
1. Not high; not elevated in place; low. 'Lowly lands.' ... 2. Low in rank or social importance. 'One common right the great and lowly claims.' (Pope) ... 3. Not lofty or sublime; humble. 'These rural poems, and their lowly strain.' (Dryden) ... 4. Having a low esteem of one's own worth; humble; meek; free from pride. 'Take my yoke upon you, and learn …

lown-ganong-levine syndrome
<syndrome> A form of pre-excitation characterised by a short pr interval associated with a normal qrs complex. ... (12 Dec 1998) ...

Lown, Bernard
<person> U.S. Cardiologist, *1921. ... See: Lown-Ganong-Levine syndrome. ... (05 Mar 2000) ...

Lowry protein assay
A method for determining protein concentrations using the Folin-Ciocalteu reagent. ... Synonym: Lowry-Folin assay. ... (05 Mar 2000) ...

Lowry-Folin assay
Synonym for Lowry protein assay ... A method for determining protein concentrations using the Folin-Ciocalteu reagent. ... Synonym: Lowry-Folin assay. ... (05 Mar 2000) ...

Lowry, Oliver
<person> U.S. Biochemist, *1910. ... See: Lowry-Folin assay, Lowry protein assay. ... (05 Mar 2000) ...

Lowry, R Brian
<person> 20th century Irish medical geneticist in Canada. ... See: Coffin-Lowry syndrome. ... (05 Mar 2000) ...

Lowsley tractor
A slender curved instrument with flexible blades at its tip, which can be opened or closed by rotation at the proximal end of the tractor; it is passed per urethram into the bladder and used to retract the prostate gland downward into the operative field in the initial stages of perineal prostatectomy. ... (05 Mar 2000) ...

Lowsley, Oswald
<person> U.S. Urologist, 1884-1955. ... See: Lowsley tractor. ... (05 Mar 2000) ...

loxapine
<drug> This tricyclic dibenzoxazepine antipsychotic agent is used to treat schizophrenia. ... (09 Oct 1997) ...

loxia
Synonym: torticollis. ... Origin: G. Loxos, oblique, slanting ... (05 Mar 2000) ...

loxodromic
Pertaining to sailing on rhumb lines; as, loxodromic tables. ... <geometry> Loxodromic curve or line, a line on the surface of a sphere, which always makes an equal angle with every meridian; the rhumb line. It is the line on which a ship sails when her course is always in the direction of one and the same point of the compass. ... Origin: Gr. …

Loxosceles
A genus of venomous spiders, the brown spiders, marked by a fiddle-shaped pattern on the cephalothorax, and found chiefly in South America. They inflict a highly ulcerative, spreading dermal lesion at the site of the bite (loxoscelism). Important species include Loxosceles laeta, the Chilean brown spider; Loxosceles reclusus, the brown spider of No …

loxoscelism
A clinical illness produced by the brown recluse spider, Loxosceles reclusus, of North America; characterised by gangrenous slough at the site of the bite, nausea, malaise, fever, haemolysis, and thrombocytopenia. ... (05 Mar 2000) ...

Loxotrema ovatum
Former name for Metagonimus yokogawai. ... Origin: G. Loxos, slanting, + trema, a hole; L. Ovatus, egg-shaped ... (05 Mar 2000) ...

lozenge
Synonym: troche. ... Origin: Fr. Losange, fr. Lozange, rhombic ... (05 Mar 2000) ...

LPC proprotein convertase
<enzyme> Member of the proprotein convertase family and directly implicated in oncogeneis; amino acid sequence given in first source ... Registry number: EC 3.4.21.- ... Synonym: lpc gene product, lpc protein ... (26 Jun 1999) ...

LPH
<abbreviation> Lipotropic hormone. ... (05 Mar 2000) ...

LPO
<abbreviation> Left posterior oblique, a radiographic projection. ... (05 Mar 2000) ...

LPS
<abbreviation> Lipopolysaccharide. ... (05 Mar 2000) ...

Lr
Symbol for lawrencium. ... (05 Mar 2000) ...

Lr dose
The limes reacting dose of diphtheria toxin, i.e., the smallest amount of toxin that, when mixed with one unit of antitoxin and injected intracutaneously in the shaved skin of a susceptible guinea pig, yields a minimal, positive reaction and inflammation localised to the region of the injection; the Lrd. Closely approximates the Lod., as would be e …

LRCP
<abbreviation> Licentiate of the Royal College of Physicians (of England). ... (05 Mar 2000) ...

LRCS
<abbreviation> Licentiate of the Royal College of Surgeons (of England). ... (05 Mar 2000) ...

LRF
<abbreviation> Luteinizing hormone-releasing factor. ... (05 Mar 2000) ...

LRFPS
<abbreviation> Licentiate of the Royal Faculty of Physicians and Surgeons, a Scottish institution. ... (05 Mar 2000) ...

LRH
<abbreviation> Luteinizing hormone-releasing hormone. ... (05 Mar 2000) ...

LSA
<abbreviation> Left sacroanterior position. ... (05 Mar 2000) ...

LSCS
Lower segment Cesarian section. A Cesarian section in which the surgical incision (cut) is made in the lower segment of the uterus. ... (12 Dec 1998) ...

LSD
Synonym for lysergic acid diethylamide ... <chemical> A centrally acting agent with hallucinogenic properties, may precipitate psychosis. ... Acronym: LSD ... (27 Sep 1997) ...

LSF
<abbreviation> Line spread function. ... (05 Mar 2000) ...

LSP
<abbreviation> Left sacroposterior position. ... (05 Mar 2000) ...

LST
<abbreviation> Left sacrotransverse position. ... (05 Mar 2000) ...

LT
<abbreviation> Leukotrienes, usually followed by another letter with a subscript number; e.g., LTA4, LTC4. ... (05 Mar 2000) ...

LTDH short chain dehydrogenase
<enzyme> Has been sequenced; responsible for methotrexate resistance; isolated from leishmania sp. ... Registry number: EC 1.3.- ... Synonym: ltdh gene product, pteridine reductase 1, ptr1 gene product, hmtx(r) gene product ... (26 Jun 1999) ...

LTH
<abbreviation> Luteotropic hormone. ... (05 Mar 2000) ...

LTM
<abbreviation> Long-term memory. ... (05 Mar 2000) ...

LTR
Synonym for long-terminal repeat ... <molecular biology> Identical DNA sequences, several hundred nucleotides long, found at either end of transposons and the proviral DNA, formed by reverse transcription of retroviral RNA. ... They are thought to have an essential role in integrating the transposon or provirus into the host DNA. Long terminal …

Lu
Symbol for lutetium. ... (05 Mar 2000) ...

Lu antigens
Synonym for 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) ...

Lubarsch, Otto
<person> German pathologist, 1860-1933. ... See: Lubarsch's crystals. ... (05 Mar 2000) ...

Lubarsch's crystals
Intracellular crystal's in the testis resembling sperm crystal's. ... (05 Mar 2000) ...

lubber
A heavy, clumsy, or awkward fellow; a sturdy drone; a clown. 'Lingering lubbers lose many a penny.' (Tusser) Land lubber, a name given in contempt by sailors to a person who lives on land. Lubber grasshopper, a hole in the floor of the 'top,' next the mast, through which sailors may go aloft without going over the rim by the futtock shrouds. It is …

lubricant
An oily or slippery substance. A vaginal lubricant may be helpful for women who feel pain during intercourse because of vaginal dryness. ... (12 Dec 1998) ...

lubricating cream
A form of cold cream used as a massage cream or night cream; it contains lanolin or its derivatives. ... (05 Mar 2000) ...

lubrication
The application of a substance to diminish friction between two surfaces. It may refer to oils, greases, and similar substances for the lubrication of medical equipment but it can be used for the application of substances to tissue to reduce friction, such as lotions for skin and vaginal lubricants. ... (12 Dec 1998) ...

Lubrol
<chemical> A nonionic detergent. ... (18 Nov 1997) ...

Luc, Henri
<person> French laryngologist, 1855-1925. ... See: Luc's operation, Caldwell-Luc operation, Ogston-Luc operation. ... (05 Mar 2000) ...

Luc's operation
Synonym for Caldwell-Luc operation ... An intraoral procedure for opening into the maxillary antrum through the supradental (canine) fossa above the maxillary premolar teeth. ... Synonym: intraoral antrostomy, Luc's operation. ... (05 Mar 2000) ...

lucanthone
<chemical> Schistosomicide formerly given orally. Its use has been replaced largely by hycanthone and more recently praziquantel. ... Pharmacological action: schistosomicides. ... Chemical name: 9H-Thioxanthen-9-one, 1-((2-(diethylamino)ethyl)amino)-4-methyl- ... (12 Dec 1998) ...

lucanthone hydrochloride
1,2'-Diethylaminoethylamino-4-methylthiaxanthone hydrochloride;used in the treatment of urinary schistosomiasis (Schistosoma haematobium) and intestinal schistosomiasis (S. Mansoni). ... (05 Mar 2000) ...

Lucas, Richard
<person> An English anatomist and surgeon, 1846-1915. ... See: Lucas' groove. ... (05 Mar 2000) ...

Lucas' groove
Synonym for stria spinosa ... A faint groove occasionally caused by the chorda tympani nerve on the spine of the sphenoid. ... Synonym: Lucas' groove, sulcus spinosus. ... (05 Mar 2000) ...

lucensomycin
<chemical> Antifungal antibiotic isolated from cultures of streptomyces lucensis. ... Pharmacological action: antibiotics, antifungal, antibiotics, macrolide. ... Chemical name: Lucensomycin ... (12 Dec 1998) ...

lucent
Bright; clear; translucent. ... Origin: L. Lucere, to shine ... (05 Mar 2000) ...

lucern
1. A sort of hunting dog; perhaps from Lucerne, in Switzerland. 'My lucerns, too, or dogs inured to hunt Beasts of most rapine.' (Chapman) ... 2. An animal whose fur was formerly much in reqest (by some supposed to be the lynx). ... Alternative forms: lusern and luzern] 'The polecat, mastern, and the richskinned lucern I know to chase.' (Beau. & …

Lucibacterium
A genus of aerobic to facultatively anaerobic, motile, peritrichous bacteria containing Gram-negative rods. Their metabolism is fermentative, and they are usually luminescent. They occur on the surface of dead fish and in sea water. The type species is Lucibacterium harveyi. ... Origin: L. Luceo, to shine, + bacterium ... Lucibacterium harveyi, a spe …

lucid
Clear, not obscured or confused, as in a lucid moment or lucid spoken expression. ... Origin: L. Lucidus, clear ... (05 Mar 2000) ...

lucid interval
In psychoses or delirium, a rational period appearing in the course of the mental disorder. ... (05 Mar 2000) ...

lucidification
Synonym: clarification. ... Origin: L. Lucidus, clear, + facio, to make ... (05 Mar 2000) ...

lucidity
The quality or state of being lucid. ... (05 Mar 2000) ...

lucifer
1. The planet Venus, when appearing as the morning star; applied in Isaiah by a metaphor to a king of Babylon. 'How art thou fallen from heaven, O Lucifer, son of the morning ! how art thou cut down to the ground which didst weaken the nations !' (Is. Xiv. 12) 'Tertullian and Gregory the Great understood this passage of Isaiah in reference to the f …

luciferase
<enzyme> An enzyme from firefly tails that catalyses the production of light in the reaction between luciferin and ATP. Used by the male firefly for producing light to attract females and used in the laboratory in a chemiluminescence bioassay for ATP. ... (18 Nov 1997) ...

luciferin
<protein> Substrate for the enzyme luciferase that catalyses an oxidative reaction leading to photon emission (bioluminescence). ... (18 Nov 1997) ...

luciferins
A generic term referring to a substrate which, upon oxidation by the enzyme luciferase, produces bioluminescence. Luciferins isolated from different species may vary greatly in structure, although in many cases identical structures have been found in widely diverse animals. The american firefly, photinus pyralis, and its substrate have been studied …

luciferyl adenylate
An intermediate compound in the pathway of bioluminescence. Its precursor is the pigment luciferin. It is the substrate of the enzyme luciferase, which combines it with oxygen to make visible light. ... (09 Oct 1997) ...

lucifugal
Avoiding light. ... Origin: L. Lux, light, + fugio, to flee from ... (05 Mar 2000) ...

lucigenin
<protein> Compound used as a bystander substrate in assaying the metabolic activation of leucocytes by chemiluminescence. When oxidized by superoxide it emits light. ... (18 Nov 1997) ...

Lucilia
A genus of scavenging blowflies (family Calliphoridae), commonly called bluebottle or greenbottle flies, whose larvae feed on carrion or excrement; they occasionally cause wound infestation or myiasis. ... (05 Mar 2000) ...

Lucilia caesar
A species whose larvae formerly were used in the treatment of septic wounds. ... See: Phormia regina. ... (05 Mar 2000) ...

Lucilia cuprina
The most important cause of blowfly strike of sheep in Australia and South Africa. ... (05 Mar 2000) ...

Lucilia illustris
A metallic blue-green blowfly widely distributed in North America; the eggs are deposited chiefly on animal carcasses. ... (05 Mar 2000) ...

Lucilia sericata
Synonym for Phaenicia sericata ... A common species of yellowish or metallic green blowfly (family Calliphoridae, order Diptera); an abundant scavenger feeding on carrion or excrement, and implicated in sheep strike and other forms of myiasis. ... Synonym: Lucilia sericata. ... (05 Mar 2000) ...

lucimycin
Synonym for lucensomycin ... <chemical> Antifungal antibiotic isolated from cultures of streptomyces lucensis. ... Pharmacological action: antibiotics, antifungal, antibiotics, macrolide. ... Chemical name: Lucensomycin ... (12 Dec 1998) ...

Lucio, R
<person> Mexican physician, 1819-1866. ... See: Lucio's leprosy, Lucio's leprosy phenomenon. ... (05 Mar 2000) ...

Lucio's leprosy
An acute form occurring in pure diffuse lepromatous leprosy presenting irregularly shaped, intensely erythematous, tender plaques, especially of the legs, with tendency to ulceration and scarring. ... Synonym: lazarine leprosy, Lucio's leprosy phenomenon. ... (05 Mar 2000) ...

Lucio's leprosy phenomenon
Synonym for Lucio's leprosy ... An acute form occurring in pure diffuse lepromatous leprosy presenting irregularly shaped, intensely erythematous, tender plaques, especially of the legs, with tendency to ulceration and scarring. ... Synonym: lazarine leprosy, Lucio's leprosy phenomenon. ... (05 Mar 2000) ...

lucipetal
Seeking light. ... Origin: L. Lux, light, + peto, to seek ... (05 Mar 2000) ...

Lucke carcinoma
<cell biology, oncology> A renal carcinoma, caused by a herpes virus, in frogs, it aroused interest because its abnormal growth appears to be dependent on a restricted temperature range. Nuclei from these cells give rise to normal frogs if transplanted into enucleated eggs, giving support to the epigenetic theories of neoplasia. ... (18 Nov 19 …

Lucke, Balduin
<person> U.S. Pathologist, 1889-1954. ... See: Lucke carcinoma, Lucke's adenocarcinoma, Lucke's virus. ... (05 Mar 2000) ...

Lucke, George
<person> German surgeon, 1829-1894. ... See: Lucke's test. ... (05 Mar 2000) ...

Lucke's adenocarcinoma
Synonym for Lucke carcinoma ... <cell biology, oncology> A renal carcinoma, caused by a herpes virus, in frogs, it aroused interest because its abnormal growth appears to be dependent on a restricted temperature range. Nuclei from these cells give rise to normal frogs if transplanted into enucleated eggs, giving support to the epigenetic theor …

Lucke's test
A test for hippuric acid; hot nitric acid is added to the urine and evaporated to dryness; the presence of hippuric acid is indicated by an odour of nitrobenzol upon further heating. ... (05 Mar 2000) ...

Lucke's virus
A herpesvirus associated with Lucke's carcinoma. ... (05 Mar 2000) ...

luckenschadel
Craniolacunia with meningocele or encephalocele. ... Origin: Ger. Lucke, gap + Schadel, skull ... (05 Mar 2000) ...

lucotherapy
Synonym: phototherapy. ... Origin: L. Lux, light, + G. Therapeia, therapy ... (05 Mar 2000) ...

ludic
Playlike; playfully pretending. ... Origin: G. Ludus, game ... (05 Mar 2000) ...

Ludloff, Karl
<person> German surgeon, 1864-1945. ... See: Ludloff's sign. ... (05 Mar 2000) ...

Ludloff's sign
<clinical sign> In traumatic separation of the epiphysis of the lesser trochanter: swelling and ecchymosis appear at the base of Scarpa's triangle, inability to raise the thigh in the sitting posture. ... (05 Mar 2000) ...

Ludwig, Daniel
<person> German anatomist, 1625-1680. ... See: Ludwig's angle. ... (05 Mar 2000) ...