| 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) |
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| 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) |
| poison ivy | <botany> A plant that causes a marked allergic (contact) dermatitis in the majority of individuals. (27 Sep 1997) |
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