| Petit's canals | The spaces between the fibres of the ciliary zonule at the equator of the lens of the eye. Synonym: spatia zonularia, Petit's canals. (05 Mar 2000) |
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| Petit's hernia | Lumbar hernia, occurring in Petit's triangle. (05 Mar 2000) |
| Petit's ligament | A fold of peritoneum, containing the rectouterine muscle, passing from the sacrum to the base of the broad ligament on either side, forming the lateral boundary of the rectouterine (Douglas') pouch. Synonym: plica rectouterina, Douglas' fold, Jarjavay's ligament, Petit's ligament, rectouterine fold, uterosacral ligament. (05 Mar 2000) |
| Petit's lumbar triangle | An area in the posterior abdominal wall bounded by the edges of the latissimus dorsi and external oblique muscles and the iliac crest; herniations occasionally occur here. Synonym: trigonum lumbale, Petit's lumbar triangle. (05 Mar 2000) |
| Petit's sinus | The space between the superior aspect of each cusp of the aortic valve and the dilated portion of the wall of the ascending aorta, immediately above each cusp. Synonym: sinus aortae, Petit's sinus, Valsalva's sinus. Arlt's sinus, an inconstant depression on the lower portion of the internal surface of the lacrimal sac. Barber's pilonidal sinus, pilonidal sinus occurring in barbers, usually in the web between the fingers, due to the burying of exogenous hairs by the alternate loosening and tightening of tissues of the hand by the manipulation of scissors. (05 Mar 2000) |
| Dulong-Petit law | The specific heats of many solid elements are inversely proportional to their atomic weights. (05 Mar 2000) |
| mal | <prefix> A prefix meaning ill, bad; the opposite of eu-. Often relates to a disease or disorder. Compare: dys-, caco-. Origin: Fr. Fr. L. Malum, an evil, L. Malus, bad (21 Jun 2000) |
| mal de caderas | A disease of horses in some South American countries caused by the protozoan parasite Trypanosoma equinum and manifested by emaciation, remittent fever, weakness (especially of the hindquarters, from which the disease gets its name), and eventually death; the trypanosome has a reservoir in the giant rodent, the capybara; cattle, sheep, and goats are only mildly affected; humans are not susceptible. (05 Mar 2000) |
| mal de Cayenne | <medicine> A disease of the skin, in which it become enormously thickened, and is rough, hard, and fissured, like an elephant's hide. Origin: L, fr. Gr, from, an elephant. Source: Websters Dictionary (01 Mar 1998) |
| mal de la rosa | Synonym: pellagra. (05 Mar 2000) |
| mal de los pintos | An infectious disease of the skin caused by treponema carateum that occurs only in the western hemisphere. Age of onset is between 10 and 20 years of age. This condition is characterised by marked changes in the skin colour and is believed to be transmitted by direct person-to-person contact. (12 Dec 1998) |
| mal de Meleda | Endemic symmetrical keratoderma of the extremities occurring on the island of Meleda off the coast of Dalmatia. (05 Mar 2000) |
| mal de mer | A form of motion sickness caused by the motion of a floating platform, such as a ship, boat, or raft. Synonym: mal de mer, naupathia, vomitus marinus. (05 Mar 2000) |
| mal de San Lazaro | <medicine> A disease of the skin, in which it become enormously thickened, and is rough, hard, and fissured, like an elephant's hide. Origin: L, fr. Gr, from, an elephant. Source: Websters Dictionary (01 Mar 1998) |
| mal perforant | A round, deep, trophic ulcer of the sole of the foot, following disease or injury, in any part of its course from the centre to the periphery of the nerve supplying the part. Synonym: mal perforant. (05 Mar 2000) |