water
1. H2O; a clear, odorless, tasteless liquid, solidifying at 32°F (0°C, 0°R), and boiling at 212°F (100°C, 80°R), that is present in all animal and vegetable tissues and dissolves more substances than any other liquid. See volume. 2. Euphemism for urine. 3. A pharmacopeial preparation of a clear, saturated aqueous solution (unless otherwise specified) of volatile oils, or other aromatic or volatile substances, prepared by processes involving distillation or solution (agitation followed by filtration). SYN: aromatic w.. [A.S. waeter]
- w. of adhesion w. held by molecular attraction in contact with solid surfaces, but not forming an essential part of their constitution.
- alkaline w. a w. that contains appreciable amounts of the bicarbonates of calcium, lithium, potassium, or sodium.
- aromatic w. SYN: w. (3).
- baryta w. a saturated aqueous solution of barium hydroxide; used as an alkaline reagent.
- bitter w. a natural mineral w. containing Epsom salt.
- bound w. w. held to colloids and other substances and not removed by simple filtration.
- bromine w. a w. containing the bromides of magnesium, potassium, or sodium in therapeutic amounts.
- calcic w. a w. containing appreciable quantities of calcium salts in solution.
- carbonated w., carbonic w. w. that contains a considerable amount of carbonic acid in solution.
- carbon dioxide-free w. purified w. that has been boiled vigorously for 5 min or more.
- chalybeate w. a w. that contains salts of iron in appreciable quantities.
- chlorine w. a w. that contains the chlorides of sodium, potassium, calcium, and magnesium in varying amounts.
- w. of combustion SYN: w. of metabolism.
- w. of constitution w. held by a unit of structure as an essential part of its constitution, though not an ingredient of its molecules. See w. of crystallization.
- w. of crystallization w. of constitution that unites with certain salts and is essential to their arrangement in crystalline form; e.g., CuSO4 5H2O.
- deionized w. w. purified by passing through ion-exchange columns.
- distilled w. w. purified by distillation.
- earthy w. a w. containing a large amount of mineral matter, chiefly sulfate, in solution.
- free w. w. in the body that can be removed by ultrafiltration and in which substances can be dissolved.
- gentian aniline w. gentian violet with saturated aniline w., a more effective stain than simple gentian violet.
- hard w. w. containing ions, such as Mg2+ and Ca2+, that form insoluble salts with fatty acid s so that ordinary soap will not lather in it.
- heavy w. D2O; w. in which the hydrogen atoms are deuterium, or heavy hydrogen (2H), with physical properties that differ noticeably from those of ordinary w.; an elevated presence will cause a decrease in metabolic activity; used as a moderator in nuclear reactors because of its capacity to absorb neutrons. SYN: deuterium oxide.
- indifferent w. a mineral w. containing only a small quantity of saline matter.
- w. for injection w. purified by distillation for the preparation of products for parenteral use.
- intracellular w. SYN: intracellular fluid.
- lime w. calcium hydroxide solution; a saturated solution prepared by mixing 3 g of calcium hydroxide in a liter of purified cool w.. Undissolved calcium hydroxide is allowed to precipitate and the solution is dispensed without agitation; lime w. is a common ingredient in lotions and is used internally extensively in veterinary medicine.
- w. of metabolism the w. formed in the body by oxidation of the hydrogen of the food, the greatest amount being produced in the metabolism of fat (about 117 g per 100 g of fat). SYN: w. of combustion.
- mineral w. w. that contains appreciable amounts of certain salts, which give it therapeutic properties.
- potable w. a w. fit for drinking, being free from contamination and not containing a sufficient quantity of saline material to be regarded as a mineral w..
- purified w. w. obtained by distillation or deionization.
- saline w. a w. that contains neutral salts (chlorides, bromides, iodides, sulfates) in appreciable amounts.
- Selters w., Seltzer w. a mineral w. containing carbonates of sodium, calcium, and magnesium, and chloride of sodium. [Nieder Selters, a mineral spring in Prussia]
- soft w. w. lacking those ions, such as Mg2+ and Ca2+, that form insoluble salts with fatty acid s, so that ordinary soap will lather easily in it.
- sulfate w. a w. holding in solution appreciable quantities of the sulfates of calcium, magnesium, or sodium.
- sulfur w. a w. containing hydrogen sulfide or the metallic sulfides.
- total body w. (TBW) the sum of intracellular w. and extracellular w. (volume); about 60% of body weight.
- transcellular w. that fraction of extracellular w. in cerebrospinal, digestive, epithelial, introcular, pleural, sweat, and synovial secretions; about 1.5% of body weight.

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wa·ter 'wȯt-ər, 'wät- n
1) the liquid that descends from the clouds as rain, forms streams, lakes, and seas, and is a major constituent of all living matter and that is an odorless, tasteless, very slightly compressible liquid oxide of hydrogen H2O which appears bluish in thick layers, freezes at 0°C (32°F) and boils at 100°C (212°F), has a maximum density at 4°C (39°F) and a high specific heat, is feebly ionized to hydrogen and hydroxyl ions, and is a poor conductor of electricity and a good solvent
2) liquid containing or resembling water: as
a ) (1) a pharmaceutical or cosmetic preparation made with water (2) a watery solution of a gaseous or readily volatile substance see AMMONIA WATER
b) a watery fluid (as tears or urine) formed or circulating in a living body
c) AMNIOTIC FLUID often used in pl. also BAG OF WATERS
water vi to form or secrete water or watery matter (as tears or saliva)

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wa·ter (wawґtər) (wahґtər) 1. a tasteless, odorless, colorless liquid, (H2O)n, used as the standard of specific gravity and of specific heat. It freezes at 0°C (32°F) and boils at 100°C (212°F). It is present in all organic tissues and in many other substances and is the most universal of the solvents. 2. aromatic w. 3. purified w.

Medical dictionary. 2011.

Synonyms:
, , , / (for drink), , , , / (as cloth, to give it an undulating or wavy appearance)


Look at other dictionaries:

  • Water — Wa ter (w[add] t[ e]r), n. [AS. w[ae]ter; akin to OS. watar, OFries. wetir, weter, LG. & D. water, G. wasser, OHG. wazzar, Icel. vatn, Sw. vatten, Dan. vand, Goth. wat[=o], O. Slav. & Russ. voda, Gr. y dwr, Skr. udan water, ud to wet, and perhaps …   The Collaborative International Dictionary of English

  • Water —    • Water was much safer in olden times, but now it can contain poison and parasites (giardia and hepatitis). The best water is fast moving and at high elevations, and away from human habitation. Water should always be clear, never discolored or …   The writer's dictionary of science fiction, fantasy, horror and mythology

  • water — [wôt′ər, wät′ər] n. [ME < OE wæter, akin to Ger wasser < IE * wodōr < * wed , to wet (< base * awed , to moisten, flow) > Gr hydōr, water, L unda, a wave, Russ voda, water, Ir uisce, water] 1. the colorless, transparent liquid… …   English World dictionary

  • water — ► NOUN 1) the liquid which forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms. 2) (waters) an area of sea regarded as under the jurisdiction of a particular country. 3) (the waters) the water of a mineral… …   English terms dictionary

  • Water — Wa ter, v. t. [imp. & p. p. {Watered}; p. pr. & vb. n. {Watering}.] [AS. w[ae]terian, gew[ae]terian.] [1913 Webster] 1. To wet or supply with water; to moisten; to overflow with water; to irrigate; as, to water land; to water flowers. [1913… …   The Collaborative International Dictionary of English

  • Water — Wa ter, v. i. 1. To shed, secrete, or fill with, water or liquid matter; as, his eyes began to water. [1913 Webster] If thine eyes can water for his death. Shak. [1913 Webster] 2. To get or take in water; as, the ship put into port to water.… …   The Collaborative International Dictionary of English

  • water — / vater/ s.m. [abbrev. di water closet ]. [vaso di maiolica e relativo sciacquone collocati nella stanza da bagno] ▶◀ (pop.) cesso, gabinetto, tazza, vaso, water closet …   Enciclopedia Italiana

  • water — [n] pure liquid hydrogen and oxygen Adam’s ale*, aqua, aqua pura*, drink, H2O, rain, rainwater, saliva, tears; concept 467 water [v] dampen; put water in baptize, bathe, damp, dilute, doctor, douse, drench, drool, flood, hose, imbue, inundate,… …   New thesaurus

  • water — wa‧ter [ˈwɔːtə ǁ ˈwɒːtər, ˈwɑː ] verb water something → down phrasal verb [transitive] to make a suggestion, rule, or proposal less forceful by removing some parts of it: • A late amendment watered down the insider trading penalties to a £100,000 …   Financial and business terms

  • water — BALAST [pr.: uótăr balast] n. Tanc conţinând lestul lichid al unei nave şi fiind plasat în fundul dublu al acesteia. /<fr., engl. water balast Trimis de siveco, 22.08.2004. Sursa: NODEX …   Dicționar Român

  • wáter — wáter, water closet → váter …   Diccionario panhispánico de dudas

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