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seaplane

(Encyclopedia) seaplane, airplane designed to take off from and alight on water. The two most common types are the floatplane, whose fuselage is supported by struts attached to two or more pontoon…

sulfur dioxide

(Encyclopedia) sulfur dioxide, chemical compound, SO2, a colorless gas with a pungent, suffocating odor. It is readily soluble in cold water, sparingly soluble in hot water, and soluble in alcohol,…

whitewash

(Encyclopedia) whitewash, white fluid commonly used as an inexpensive, impermanent coating for walls, fences, stables, and other exterior structures. It varies in composition, being generally a…

hydrometer

(Encyclopedia) hydrometerhydrometerhīdrŏmˈətər [key], device used to determine directly the specific gravity of a liquid. It usually consists of a thin glass tube closed at both ends, with one end…

asperges

(Encyclopedia) aspergesaspergesəspûrˈjəs [key], ceremonial sprinkling of the people with holy water by the priest before the Sunday High Mass in the Roman Catholic Church. The accompanying antiphon…

halophyte

(Encyclopedia) halophytehalophytehălˈəfītˌ [key], any plant, especially a seed plant, that is able to grow in habitats excessively rich in salts, such as salt marshes, sea coasts, and saline or…

root crop

(Encyclopedia) root crop, vegetable cultivated chiefly for its edible roots, e.g., the beet, turnip, mangel-wurzel, carrot, and parsnip. All root crops have a large water content and grow best in…

cryptosporidium

(Encyclopedia) cryptosporidiumcryptosporidiumkrĭpˌtōspərĭdˈēəm [key], genus of protozoans having at least four species; they are waterborne parasites that cause the disease cryptosporidiosis. One of…