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Hydracid :: Hydracid (n.) An acid containing hydrogen; -- sometimes applied to distinguish acids like hydrochloric, hydrofluoric, and the like, which contain no oxygen, from the oxygen acids or oxacids. See Acid..

Pump :: Pump (n.) An hydraulic machine, variously constructed, for raising or transferring fluids, consisting essentially of a moving piece or piston working in a hollow cylinder or other cavity, with valves properly placed for admitting or retaining the fluid as it is drawn or driven through them by the action of the piston..

Hydra-tainted :: Hydra-tainted (a.) Dipped in the gall of the fabulous hydra; poisonous; deadly.

Pectin :: Pectin (n.) One of a series of carbohydrates, commonly called vegetable jelly, found very widely distributed in the vegetable kingdom, especially in ripe fleshy fruits, as apples, cranberries, etc. It is extracted as variously colored, translucent substances, which are soluble in hot water but become viscous on cooling..

Hydrachnid :: Hydrachnid (n.) An aquatic mite of the genus Hydrachna. The hydrachnids, while young, are parasitic on fresh-water mussels..

Hydrate :: Hydrate (n.) A compound formed by the union of water with some other substance, generally forming a neutral body, as certain crystallized salts..

Verditer :: Verditer (n.) Either one of two pigments (called blue verditer, and green verditer) which are made by treating copper nitrate with calcium carbonate (in the form of lime, whiting, chalk, etc.) They consist of hydrated copper carbonates analogous to the minerals azurite and malachite..

Sucre :: Sucrate (n.) A compound of sucrose (or of some related carbohydrate) with some base, after the analogy of a salt; as, sodium sucrate..

Flume :: Flume (n.) A stream; especially, a passage channel, or conduit for the water that drives a mill wheel; or an artifical channel of water for hydraulic or placer mining; also, a chute for conveying logs or lumber down a declivity..

Oxyacid :: Oxyacid (n.) An acid containing oxygen, as chloric acid or sulphuric acid; -- contrasted with the hydracids, which contain no oxygen, as hydrochloric acid. See Acid, and Hydroxy-..

Polyacid :: Polyacid (a.) Capable of neutralizing, or of combining with, several molecules of a monobasic acid; having more than one hydrogen atom capable of being replaced by acid radicals; -- said of certain bases; as, calcium hydrate and glycerin are polyacid bases..

Theca :: Theca (n.) The chitinous cup which protects the hydranths of certain hydroids.

Hydrina :: Hydrina (n. pl.) The group of hydroids to which the fresh-water hydras belong.

Saccharonic :: Saccharonic (a.) Of, pertaining to, or derived from, saccharone; specifically, designating an unstable acid which is obtained from saccharone (a) by hydration, and forms a well-known series of salts..

Accumulator :: Accumulator (n.) An apparatus by means of which energy or power can be stored, such as the cylinder or tank for storing water for hydraulic elevators, the secondary or storage battery used for accumulating the energy of electrical charges, etc..

Potash :: Potash (n.) The hydroxide of potassium hydrate, a hard white brittle substance, KOH, having strong caustic and alkaline properties; -- hence called also caustic potash..

Dextrin :: Dextrin (n.) A translucent, gummy, amorphous substance, nearly tasteless and odorless, used as a substitute for gum, for sizing, etc., and obtained from starch by the action of heat, acids, or diastase. It is of somewhat variable composition, containing several carbohydrates which change easily to their respective varieties of sugar. It is so named from its rotating the plane of polarization to the right; -- called also British gum, Alsace gum, gommelin, leiocome, etc. See Achroodextrin, and Ery

Arabin :: Arabin (n.) A carbohydrate, isomeric with cane sugar, contained in gum arabic, from which it is extracted as a white, amorphous substance..

Normal :: Normal (a.) Denoting certain hypothetical compounds, as acids from which the real acids are obtained by dehydration; thus, normal sulphuric acid and normal nitric acid are respectively S(OH)6, and N(OH)5..

Hydragogue :: Hydragogue (a.) Causing a discharge of water; expelling serum effused into any part of the body, as in dropsy..

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