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

Diaspore :: Diaspore (n.) A hydrate of alumina, often occurring in white lamellar masses with brilliant pearly luster; -- so named on account of its decrepitating when heated before the blowpipe..

Water Lime :: Water lime () Hydraulic lime.

Amylose :: Amylose (n.) One of the starch group (C6H10O5)n of the carbohydrates; as, starch, arabin, dextrin, cellulose, etc..

Water Cement :: Water cement () Hydraulic cement.

Water Mite :: Water mite () Any of numerous species of aquatic mites belonging to Hydrachna and allied genera of the family Hydrachnidae, usually having the legs fringed and adapted for swimming. They are often red or red and black in color, and while young are parasites of fresh-water insects and mussels. Called also water tick, and water spider..

Feeder :: Feeder (n.) A stream that flows into another body of water; a tributary; specifically (Hydraulic Engin.), a water course which supplies a canal or reservoir by gravitation or natural flow..

Saxifragaceous :: Saxifragaceous (a.) Of or pertaining to a natural order of plants (Saxifragaceae) of which saxifrage is the type. The order includes also the alum root, the hydrangeas, the mock orange, currants and gooseberries, and many other plants..

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

Geyserite :: Geyserite (n.) A loose hydrated form of silica, a variety of opal, deposited in concretionary cauliflowerlike masses, around some hot springs and geysers..

Hydrargyrum :: Hydrargyrum (n.) Quicksilver; mercury.

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..

Liroconite :: Liroconite (n.) A hydrated arseniate of copper, occurring in obtuse pyramidal crystals of a sky-blue or verdigris-green color..

Ram :: Ram (n.) The plunger of a hydraulic press.

Tubularia :: Tubularia (n.) A genus of hydroids having large, naked, flowerlike hydranths at the summits of long, slender, usually simple, stems. The gonophores are small, and form clusters at the bases of the outer tentacles..

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

Salicylide :: Salicylide (n.) A white crystalline substance obtained by dehydration of salicylic acid.

Standpipe :: Standpipe (n.) A vertical pipe, open at the top, between a hydrant and a reservoir, to equalize the flow of water; also, a large vertical pipe, near a pumping engine, into which water is forced up, so as to give it sufficient head to rise to the required level at a distance..

Hydractinian :: Hydractinian (n.) Any species or marine hydroids, of the genus Hydractinia and allied genera. These hydroids form, by their rootstalks, a firm, chitinous coating on shells and stones, and esp. on spiral shells occupied by hermit crabs. See Illust. of Athecata..

Hydrangea :: Hydrangea (n.) A genus of shrubby plants bearing opposite leaves and large heads of showy flowers, white, or of various colors. H. hortensis, the common garden species, is a native of China or Japan..

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