| OR | a logical binary relation that is true if any argument is true, and false otherwise; [o]estrogen rec... |
|---|---|
| ORALABX | oral antibiotics |
| ORD | optical rotatory dispersion; oral radiation death |
| OROS | oral osmotic |
| ORT | object relations technique; operating room technician; oral rehydration therapy |
| water gavel | A gavel or rent paid for a privilege, as of fishing, in some river or water. Source: Websters Dictionary (01 Mar 1998) |
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| water germander | <botany> A labiate plant (Teucrium Scordium) found in marshy places in Europe. Source: Websters Dictionary (01 Mar 1998) |
| water glass | <chemistry> See Soluble glass, under Glass. Source: Websters Dictionary (01 Mar 1998) |
| water god | A fabulous deity supposed to dwell in, and preside over, some body of water. Source: Websters Dictionary (01 Mar 1998) |
| water hammer | <physics> 1. A vessel partly filled with water, exhausted of air, and hermetically sealed. When reversed or shaken, the water being unimpeded by air, strikes the sides in solid mass with a sound like that of a hammer. 2. A concussion, or blow, made by water in striking, as against the sides of a pipe or vessel containing it. Source: Websters Dictionary (01 Mar 1998) |
| water-hammer pulse | <radiology> Corrigan's sign: increased pulse at wrist, aortic insufficiency, widened pulse pressure due to increased stroke volume, diastolic regurgitation (12 Dec 1998) |
| water hare | <zoology> A small American hare or rabbit (Lepus aquaticus) found on or near the southern coasts of the United States. Synonym: water rabbit, and swamp hare. Source: Websters Dictionary (01 Mar 1998) |
| water hemlock | <botany> A poisonous umbelliferous plant (Cicuta virosa) of Europe; also, any one of several plants of that genus. A poisonous plant (oenanthe crocata) resembling the above. Source: Websters Dictionary (01 Mar 1998) |
| water hemp | <botany> See Hemp. Source: Websters Dictionary (01 Mar 1998) |
| water hen | 1. <zoology> Any gallinule. 2. <zoology> The common American coot. Source: Websters Dictionary (01 Mar 1998) |
| water hog | <zoology> The capybara. Source: Websters Dictionary (01 Mar 1998) |
| water horehound | <botany> Bugleweed. Source: Websters Dictionary (01 Mar 1998) |
| water hyacinth | <botany> Either of several tropical aquatic plants of the genus Eichhornia, related to the pickerel weed. Source: Websters Dictionary (01 Mar 1998) |
| water intoxication | The condition induced by the undue retention of water with sodium depletion. It is marked by lethargy, nausea, vomiting, and mild mental aberrations, and in severe cases by convulsions and coma. (12 Dec 1998) |
| water itch | Cutaneous larva migrans caused by larvae of hookworms. Synonym: ancylostoma dermatitis, ancylostomiasis cutis, coolie itch, dew itch, ground itch, swamp itch, swimmer's itch, toe itch, water itch, water sore. (05 Mar 2000) |