| lugworm | <zoology> A large marine annelid (Arenicola marina) having a row of tufted gills along each side of the back. It is found burrowing in sandy beaches, both in America and Europe, and is used for bait by European fishermen. Synonym: lobworm, and baitworm. Origin: 1st lug + worm. Source: Websters Dictionary (01 Mar 1998) |
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| Lukes-Collins classification | A classification of lymphomas according to the immunologic nature of the cell of origin, based on histologic and clinical data. (05 Mar 2000) |
| lukewarm | Moderately warm; neither cold nor hot; tepid; not ardent; not zealous; cool; indifferent. " Lukewarm blood." . " Lukewarm patriots." "An obedience so lukewarm and languishing that it merits not the name of passion." (Dryden) Lucewarmly, Lucewarmness. See: Luke. Source: Websters Dictionary (01 Mar 1998) |
| LUL | <abbreviation> Left upper lobe (of lung). (05 Mar 2000) |
| luliberin | A decapeptide hormone from the hypothalamus that stimulates the anterior pituitary to release both follicle-stimulating hormone and luteinizing hormone. Synonym: luteinizing hormone-releasing hormone. Origin: Luteinizing hormone + L. Libero, to free, + -in (05 Mar 2000) |
| lum | 1. A chimney. 2. A ventilating chimney over the shaft of a mine. 3. A woody valley; also, a deep pool. Origin: W. Llumon chimney, llum that shoots up or ends in a point. Source: Websters Dictionary (01 Mar 1998) |
| lumachella | <chemical> A grayish brown limestone, containing fossil shells, which reflect a beautiful play of colours. It is also called fire marble, from its fiery reflections. Origin: F. Lumachelle, It. Lumachella, fr. Lamachella a little snail, dim. Of lumaca a snail, fr. L. Limax, -acis. Source: Websters Dictionary (01 Mar 1998) |
| lumbago | <symptom> Pain in the lumbar region. Origin: L. Lumbus = loin (18 Nov 1997) |
| lumbal | <anatomy> Of, pertaining to, or near, the loins; as, the lumbar arteries. <anatomy> Lumbar region, the region of the loin; specifically, a region between the hypochondriac and ilias regions, and outside of the umbilical region. Origin: L. Lumbus loin. See Loin. Source: Websters Dictionary (01 Mar 1998) |
| lumbar | <anatomy> Pertaining to the loins, the part of the back between the thorax and the pelvis. (18 Nov 1997) |
| lumbar appendicitis | A retrodisplaced appendix in the lumbar region. (05 Mar 2000) |
| lumbar artery | <anatomy, artery> Origin, abdominal aorta; one of four or five pairs; distribution, lumbar vertebrae, muscles of back, abdominal wall; anastomoses, intercostal, subcostal, superior and inferior epigastric, deep circumflex iliac, and iliolumbar. Synonym: arteria lumbalis. (05 Mar 2000) |
| lumbar branch of iliolumbar artery | <anatomy, artery> Terminal branch of iliolumbar artery (with iliac branch) which ascends to supply psoas major and quadratus lumborum muscles; anastomosis: fourth lumbar artery. Synonym: ramus lumbalis arteriae iliolumbalis. (05 Mar 2000) |
| lumbar cistern | Enlargement of subarachnoid space between inferior end of spinal cord (vertebral level L-2) and inferior end of subarachnoid space or dura mater (vertebral level S2); occupied by the dorsal and ventral roots of lumbosacral spinal nerves (which constitute the cauda equina), the filum terminal, and cerebrospinal fluid. Site for lumbar puncture and spinal anaesthesia. (05 Mar 2000) |
| lumbar cord | That part of the cord that consists of the five lumbar segments and gives rise to the five pairs of lumbar nerves. Synonym: pars lumbalis medullae spinalis. (05 Mar 2000) |