| 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) |
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| 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 dropwort | <botany> A European poisonous umbelliferous plant (Enanthe fistulosa) with large hollow stems and finely divided leaves. Source: Websters Dictionary (01 Mar 1998) |
| water eagle | <zoology> The osprey. Source: Websters Dictionary (01 Mar 1998) |
| water elder | <botany> The guelder-rose. Source: Websters Dictionary (01 Mar 1998) |
| water elephant | <zoology> The hippopotamus. Source: Websters Dictionary (01 Mar 1998) |
| water feather-foil | <botany> The water violet (Hottonia palustris); also, the less showy American plant H. Inflata. Source: Websters Dictionary (01 Mar 1998) |
| water flag | <botany> A European species of Iris (Iris Pseudacorus) having bright yellow flowers. Source: Websters Dictionary (01 Mar 1998) |
| water flannel | <botany> A floating mass formed in pools by the entangled filaments of a European fresh water alga (Cladophora crispata). Source: Websters Dictionary (01 Mar 1998) |
| water flea | <zoology> Any one of numerous species of small aquatic Entomostraca belonging to the genera Cyclops, Daphnia, etc; so called because they swim with sudden leaps, or starts. Source: Websters Dictionary (01 Mar 1998) |
| water flounder | <zoology> The windowpane (Pleuronectes maculatus). Source: Websters Dictionary (01 Mar 1998) |
| water for injection | Water purified by distillation for the preparation of products for parenteral use. (05 Mar 2000) |
| water fox | <zoology> The carp; so called on account of its cunning. Source: Websters Dictionary (01 Mar 1998) |
| water furrow | <agriculture> A deep furrow for conducting water from the ground, and keeping the surface soil dry. Source: Websters Dictionary (01 Mar 1998) |
| water gas | <chemistry> See Gas. Source: Websters Dictionary (01 Mar 1998) |
| transcellular water | That fraction of extracellular water in cerebrospinal, digestive, epithelial, introcular, pleural, sweat, and synovial secretions; about 1.5% of body weight. (05 Mar 2000) |
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| extravascular lung water | <physiology> Water present within the lungs; its volume is roughly equal to, or a little less than, the intracellular blood volume of the lungs. Accumulations of extravascular lung water result in pulmonary oedema. (12 Dec 1998) |
| free water | Water in the body that can be removed by ultrafiltration and in which substances can be dissolved. (05 Mar 2000) |
| free water clearance | The amount of water excreted in the urine beyond that which would accompany the excreted solutes if the urine were isosmotic with plasma; it represents the loss of body water in excess of solute tending to raise body osmolality and making urine hyposmotic. Unlike other clearance's, it is calculated by subtracting the osmolal clearance from the actual volume of urine excreted per minute. A negative value for free water clearance represents the amount of water that the body has reclaimed from isosmotic tubule fluid to make the urine hyperosmotic and to lower body osmolality. (05 Mar 2000) |
| fresh water | 1. Water containing no significant amounts of salts, such as rivers and lakes. 2. Of, pertaining to, or living in, water not salt; as, fresh-water geological deposits; a fresh water fish; fresh water mussels. 3. Accustomed to sail on fresh water only; unskilled as a seaman; as, a fresh water sailor. 4. Unskilled; raw. Fresh water soldiers. Source: Websters Dictionary (01 Mar 1998) |
| light water | <radiobiology> Ordinary H2O, as opposed to heavy water, which contains atoms of the heavier isotopes of hydrogen, deuterium and/or tritium. See: hydrogen, isotope, deuterium, tritium, heavy water. (09 Oct 1997) |
| light-water reactor | <radiobiology> Class of fission reactors using ordinary light water as a coolant, rather than liquid metal or heavy water (water with deuterium instead of hydrogen). (09 Oct 1997) |
| lime water | Calcium hydroxide solution; a saturated solution prepared by mixing 3 g of calcium hydroxide in a liter of purified cool water. Undissolved calcium hydroxide is allowed to precipitate and the solution is dispensed without agitation; lime water is a common ingredient in lotions and is used internally extensively in veterinary medicine. (05 Mar 2000) |
| littoral water | Shallow water, to 30 feet, near the shore of deep lakes. (09 Oct 1997) |