| OCM | oral contraceptive medication |
|---|---|
| OCS | occipital condyle syndrome; Ondine's curse syndrome; open canalicular system; oral contraceptive ste... |
| OCT | object classification test; optimal cutting temperature; oral contraceptive therapy; ornithine carba... |
| OES | oral esophageal stethoscope; optical emission spectroscopy |
| OGTT | oral glucose tolerance test |
| water-cooled vibrating grate | A boiler grate made up of a tuyere grate surface mounted on a grid of water tubes interconnected with the boiler circulation system for positive cooling. The structure is supported by flexing plates allowing the grid and grate to move in a vibrating action. Ashes are automatically discharged. (05 Dec 1998) |
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| water crake | <zoology> The dipper. The spotted crake (Porzana maruetta). The swamp hen, or crake, of Australia. Source: Websters Dictionary (01 Mar 1998) |
| water cress | <botany> A perennial cruciferous herb (Nasturtium officinale) growing usually in clear running or spring water. The leaves are pungent, and used for salad and as an antiscorbutic. Source: Websters Dictionary (01 Mar 1998) |
| water crow | <zoology> The dipper. The European coot. Origin: So called in allusion to its dark plumage. Source: Websters Dictionary (01 Mar 1998) |
| water crowfoot | <botany> An aquatic kind of buttercup (Ranunculus aquatilis), used as food for cattle in parts of England. Great water crowfoot, an American water plant (Ranunculus multifidus), having deep yellow flowers. Source: Websters Dictionary (01 Mar 1998) |
| water cure | 1. <medicine> Hydropathy. 2. A hydropathic institution. Source: Websters Dictionary (01 Mar 1998) |
| water deer | <zoology> A small Chinese deer (Hydropotes inermis). Both sexes are destitute of antlers, but the male has large, descending canine tusks. The water chevrotain. Source: Websters Dictionary (01 Mar 1998) |
| water deprivation | The withholding of water in a structured experimental situation. (12 Dec 1998) |
| water devil | <zoology> The rapacious larva of a large water beetle (Hydrophilus piceus), and of other similar species. Source: Websters Dictionary (01 Mar 1998) |
| water diuresis | Diuresis following the drinking of water; due to reduced secretion of the antidiuretic hormone of the neurohypophysis in response to the lowered osmotic pressure of the blood. (05 Mar 2000) |
| water dock | <botany> A tall, coarse dock growing in wet places. The American water dock is Rumex orbiculatus, the European is R. Hydrolapathum. Source: Websters Dictionary (01 Mar 1998) |
| water doctor | <medicine> One who professes to be able to divine diseases by inspection of the urine. A physician who treats diseases with water; an hydropathist. Source: Websters Dictionary (01 Mar 1998) |
| water dog | 1. <zoology> A dog accustomed to the water, or trained to retrieve waterfowl. Retrievers, waters spaniels, and Newfoundland dogs are so trained. 2. <zoology> The menobranchus. 3. A small floating cloud, supposed to indicate rain. 4. A sailor, especially. An old sailor; an old salt. Source: Websters Dictionary (01 Mar 1998) |
| water dressing | <medicine> The treatment of wounds or ulcers by the application of water; also, a dressing saturated with water only, for application to a wound or an ulcer. Source: Websters Dictionary (01 Mar 1998) |
| water-drinking test | A test of the assessment of open-angle glaucoma, measuring intraocular pressure after drinking a quart of water in five minutes. (05 Mar 2000) |