| water shield | <botany> An aquatic American plant (Brasenia peltata) having floating oval leaves, and the covered with a clear jelly. Source: Websters Dictionary (01 Mar 1998) |
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| water shrew | <zoology> Any one of several species of shrews having fringed feet and capable of swimming actively. The two common European species (Crossopus fodiens, and C. Ciliatus) are the best known. The most common American water shrew, or marsh shrew (Neosorex palustris), is rarely seen, owing to its nocturnal habits. Source: Websters Dictionary (01 Mar 1998) |
| water snail | 1. <zoology> Any aquatic pulmonate gastropod belonging to Planorbis, Limnaea, and allied genera; a pond snail. 2. <mechanics> The Archimedean screw. Source: Websters Dictionary (01 Mar 1998) |
| water snake | <zoology> A common North American colubrine snake (Tropidonotus sipedon) which lives chiefly in the water. Any species of snakes of the family Homalopsidae, all of which are aquatic in their habits. Source: Websters Dictionary (01 Mar 1998) |
| water soldier | <botany> An aquatic European plant (Stratiotes aloides) with bayonet-shaped leaves. Source: Websters Dictionary (01 Mar 1998) |
| water-soluble chlorophyll derivatives | The copper complex of sodium and/or potassium salts of saponified chlorophyll, used topically for deodorization of chronic lesions and to promote wound repair. (05 Mar 2000) |
| water sore | 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) |
| water souchy | A dish consisting of small fish stewed and served in a little water. Alternative forms: water souchet] See Zoutch. Source: Websters Dictionary (01 Mar 1998) |
| water sparrow | <zoology> The reed warbler. The reed bunting. Source: Websters Dictionary (01 Mar 1998) |
| water speedwell | <botany> A kind of speedwell (Veronica Anagallis) found in wet places in Europe and America. Source: Websters Dictionary (01 Mar 1998) |
| water spider | <zoology> An aquatic European spider (Argyoneta aquatica) which constructs its web beneath the surface of the water on water plants. It lives in a bell-shaped structure of silk, open beneath like a diving bell, and filled with air which the spider carries down in the form of small bubbles attached one at a time to the spinnerets and hind feet. Synonym: diving spider. A water mite. Any spider that habitually lives on or about the water, especially the large American species (Dolomedes lanceolatus) which runs rapidly on the surface of water. Synonym: raft spider. Source: Websters Dictionary (01 Mar 1998) |
| water spinner | <zoology> The water spider. Source: Websters Dictionary (01 Mar 1998) |
| water star grass | <botany> An aquatic plant (Schollera graminea) with grassy leaves, and yellow star-shaped blossoms. Source: Websters Dictionary (01 Mar 1998) |
| water supply | Source, means, or process of supplying water (as for a community) usually including reservoirs, tunnels, and pipelines and often the watershed from which the water is ultimately drawn. (webster, 3d ed) (12 Dec 1998) |
| water table | <ecology> The zone of saturation at the highest average depth during the wettest season, it is at least six inches thick and persists in the soil for more than a few weeks. (09 Oct 1997) |