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secretion

(Encyclopedia)secretion, in biology, substance elaborated by the living material of an animal or plant. Secretions in humans can be produced by a single cell or by a group of cells commonly called a gland. Some sec...

verdigris

(Encyclopedia)verdigris vûrˈdəgrēsˌ [key], one of three copper acetates: blue verdigris, Cu(CH3COO)2·CuO·6H2O; green verdigris, 2Cu(CH3COO)2·CuO·6H2O; or neutral verdigris, Cu(CH3COO)2·H2O; or a mixture o...

deodorizer

(Encyclopedia)deodorizer or deodorant, substance used to absorb or eliminate offensive odors. Disinfectants such as hydrogen peroxide, chlorine, and chlorine compounds eliminate odors caused by microorganisms. Adso...

meadow saffron

(Encyclopedia)meadow saffron or autumn crocus, perennial garden ornamental (Colchicum autumnale) of the family Liliaceae (lily family). Native to Europe and N Africa, it has escaped from gardens to meadows and fiel...

Vishakhapatnam

(Encyclopedia)Vishakhapatnam kˌəpŭtˈnəm [key], city (1991 pop. 1,057,118), Andhra Pradesh state, SE India, a port on the Bay of Bengal. Established by the British in the 17th cent. and known as Waltair under B...

Nevers

(Encyclopedia)Nevers nəvĕrˈ [key], city (1991 pop. 43,889), capital of Nièvre dept., central France, on the Loire and Nièvre rivers. It is noted for its pottery and china industries. Other manufactures include...

boiling point

(Encyclopedia)boiling point, temperature at which a substance changes its state from liquid to gas. A stricter definition of boiling point is the temperature at which the liquid and vapor (gas) phases of a substanc...

hydrogen

(Encyclopedia)hydrogen hīˈdrəjən [key] [Gr.,=water forming], gaseous chemical element; symbol H; at. no. 1; interval in which at. wt. ranges 1.00784–1.00811; m.p. −259.14℃; b.p. −252.87℃; density 0.08...

asphalt

(Encyclopedia)asphalt ăsˈfôlt, –fălt [key], brownish-black substance used commonly in road making, roofing, and waterproofing. Chemically, it is a natural mixture of hydrocarbons. It varies in consistency fro...

Sabellius

(Encyclopedia)Sabellius, fl. 215, Christian priest and theologian, b. probably Libya or Egypt. He went to Rome, became the leader of those who accepted the doctrine of modalistic monarchianism, and was excommunicat...