| water thermometer | <physics> A thermometer filled with water instead of mercury, for ascertaining the precise temperature at which water attains its maximum density. This is about 39 deg Fahr, or 4 deg Centigrade; and from that point down to 32 deg Fahr, or 0 deg Centigrade, or the freezing point, it expands. Source: Websters Dictionary (01 Mar 1998) |
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| water thrush | <zoology> A North American bird of the genus Seiurus, belonging to the Warbler family, especially the common species (S. Noveboracensis). The European water ousel. The pied wagtail. Source: Websters Dictionary (01 Mar 1998) |
| water thyme | <botany> See Anacharis. Source: Websters Dictionary (01 Mar 1998) |
| water tiger | <zoology> A diving, or water, beetle, especially the larva of a water beetle. Source: Websters Dictionary (01 Mar 1998) |
| water torch | <botany> The common cat-tail (Typha latifolia), the spike of which makes a good torch soaked in oil. Source: Websters Dictionary (01 Mar 1998) |
| water tree | <botany> A climbing shrub (Tetracera alnifolia, or potatoria) of Western Africa, which pours out a watery sap from the freshly cut stems. Source: Websters Dictionary (01 Mar 1998) |
| water trefoil | <botany> The buck bean. Source: Websters Dictionary (01 Mar 1998) |
| water tube | <zoology> One of a system of tubular excretory organs having external openings, found in many invertebrates. They are believed to be analogous in function to the kidneys of vertebrates. Source: Websters Dictionary (01 Mar 1998) |
| water tupelo | <botany> A species of large tupelo (Nyssa aquatica) growing in swamps in the southern of the United States. See Ogeechee lime. Source: Websters Dictionary (01 Mar 1998) |
| water turkey | <zoology> The American snakebird. See Snakebird. Source: Websters Dictionary (01 Mar 1998) |
| water vine | <botany> Any plant of the genus Phytocrene, climbing shrubs of Asia and Africa, the stems of which are singularly porous, and when cut stream with a limpid potable juice. Source: Websters Dictionary (01 Mar 1998) |
| water violet | <botany> See Violet. Source: Websters Dictionary (01 Mar 1998) |
| water viper | <zoology> See Water moccasin. Source: Websters Dictionary (01 Mar 1998) |
| water vole | <zoology> See Vole. Source: Websters Dictionary (01 Mar 1998) |
| water wheel murmur | Churning cardiac murmur produced by air embolism to the heart; also heard in pneumohydropericardium. Synonym: water wheel murmur. (05 Mar 2000) |