| Lachman test | A manoeuvre to detect deficiency of the anterior cruciate ligament; with the knee flexed 20 to 30 degrees, the tibia is displaced anteriorly relative to the femur; a soft endpoint or greater than 4 millimeters of displacement is positive (abnormal). (05 Mar 2000) |
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| lachman's test | <investigation> A physical examination technique used to detect injury to the anterior cruciate ligament in the knee. The examiner will have you lay on your back with your knee bent at a 30 degree angle. Holding the end portion of your thigh with one hand and the top of the shin with the other hand, the examiner will apply slow pressure to the back of the of the proximal tibia (just below the knee). Increased looseness in the knee joint is indicative of an anterior cruciate ligament injury. (27 Sep 1997) |
| lachrymal | 1. Of or pertaining to tears; as, lachrymal effusions. 2. <anatomy> Pertaining to, or secreting, tears; as, the lachrymal gland. Pertaining to the lachrymal organs; as, lachrymal bone; lachrymal duct. Origin: Cf. F. Lacrymal. See Lachrymose. Source: Websters Dictionary (01 Mar 1998) |
| lachrymatory | Origin: Cf. F. Lacrymatoire. A "tear-bottle;" a narrow-necked vessel found in sepulchers of the ancient Romans; so called from a former notion that the tears of the deceased person's friends were collected in it. Synonym: lachrymal or lacrymal. Source: Websters Dictionary (01 Mar 1998) |
| LACI | <abbreviation> Lipoprotein-associated coagulation inhibitor. (05 Mar 2000) |
| lacing | 1. The act of securing, fastening, or tightening, with a lace or laces. 2. <machinery> A lace; specifically, a thong of thin leather for uniting the ends of belts. 3. A rope or line passing through eyelet holes in the edge of a sail or an awning to attach it to a yard, gaff, etc. 4. <engineering> A system of bracing bars, not crossing each other in the middle, connecting the channel bars of a compound strut. Source: Websters Dictionary (01 Mar 1998) |
| lacinia | Origin: L, the lappet or flap of a garment. 1. <botany> One of the narrow, jagged, irregular pieces or divisions which form a sort of fringe on the borders of the petals of some flowers. A narrow, slender portion of the edge of a monophyllous calyx, or of any irregularly incised leaf. 2. <zoology> The posterior, inner process of the stipes on the maxillae of insects. Source: Websters Dictionary (01 Mar 1998) |
| laciniae tubae | Synonym: fimbriae of uterine tube. Origin: L. Lacinia, fringe (05 Mar 2000) |
| laciniate | Slashed into narrow, pointed lobes. (09 Oct 1997) |
| laciniate ligament | A wide band passing from the medial malleolus to the medial and upper border of the calcaneus and to the plantar surface as far as the navicular bone; it holds in place the tendons of the tibialis posterior, flexor digitorum longus, and flexor hallucis longus. Synonym: retinaculum musculorum flexorum, laciniate ligament, ligamentum laciniatum, retinaculum of flexor muscles. (05 Mar 2000) |
| laciniated | 1. Fringed; having a fringed border. 2. <botany> Cut into deep, narrow, irregular lobes; slashed. See: Lacinia. Source: Websters Dictionary (01 Mar 1998) |
| laciniolate | <botany> Consisting of, or abounding in, very minute laciniae. See: Lacinia. Source: Websters Dictionary (01 Mar 1998) |
| lacinula | Origin: NL. <botany> A diminutive lacinia. Source: Websters Dictionary (01 Mar 1998) |
| lacis cell | One of the cell's of the juxtaglomerular apparatus found at the vascular pole of the renal corpuscle. Origin: Fr. Lacis, meshwork (05 Mar 2000) |
| lack | 1. Blame; cause of blame; fault; crime; offense. 2. Deficiency; want; need; destitution; failure; as, a lack of sufficient food. "She swooneth now and now for lakke of blood." (Chaucer) "Let his lack of years be no impediment." (Shak) Origin: OE. Lak; cf. D. Lak slander, laken to blame, OHG. Lahan, AS. Lean. Source: Websters Dictionary (01 Mar 1998) |