| ivory vertebral body | <radiology> Single or multiple very dense vertebra: collapse, metastases, sclerotic metastasis or treated lytic metastasis, preservation of disc space and vertebral body size, Paget's disease, usually single vertebral body, expanded body with thickened cortex and coarsened trabeculation, disc space preserved, lymphoma, preservation of disc space and vertebral body size, infection (low grade), end plate destruction, disc space narrowing, paraspinal soft tissue mass (12 Dec 1998) |
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| ivory-bill | <zoology> A large, handsome, North American woodpecker (Campephilus principalis), having a large, sharp, ivory-coloured beak. Its general colour is glossy black, with white secondaries, and a white dorsal stripe. The male has a large, scarlet crest. It is now rare, and found only in the Gulf States. Source: Websters Dictionary (01 Mar 1998) |
| IVP | <investigation, radiology> A special diagnostic test that follows the time course of excretion of a radiopaque contrast dye through the kidneys, ureters and bladder after it is injected into a vein. (30 Mar 1998) |
| IVU | <abbreviation> Intravenous urogram; preferred to IVP. See: intravenous urography. (05 Mar 2000) |
| ivy | 1. <botany> A plant of the genus Hedera (H. Helix), common in Europe. Its leaves are evergreen, dark, smooth, shining, and mostly five-pointed; the flowers yellowish and small; the berries black or yellow. The stem clings to walls and trees by rootlike fibres. "Direct The clasping ivy where to climb." (Milton) "Ye myrtles brown, with ivy never sere." (Milton) American ivy. 2. <botany> An American woody creeper (Rhus Toxicodendron), with trifoliate leaves, and greenish-white berries. It is exceedingly poisonous to the touch for most persons. To pipe in an ivy leaf, to console one's self as best one can. West Indian ivy, a climbing plant of the genus Marcgravia. Origin: AS. Ifig; akin to OHG. Ebawi, ebah, G. Epheu. (30 Mar 1998) |
| Ivy bleeding time test | A bleeding time test in which a sphygmomanometer is inflated to 40 mm Hg around the upper arm, a 5-mm deep incision is made on the flexor surface of the forearm, and the time is measured to cessation of bleeding. (05 Mar 2000) |
| Ivy loop wiring | Placement of a wire around two adjacent teeth to provide an attachment for intermaxillary elastics. (05 Mar 2000) |