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Seven Pines

(Encyclopedia)Seven Pines: see Peninsular campaign. ...

(Encyclopedia)Seven Wise Men of Greece, list of men drawn from among the outstanding politicians and political philosophers of ancient Greece. Although such listings differed widely, a usual one included Bias, Chil...

Seven Wonders of the World

(Encyclopedia)Seven Wonders of the World, in ancient classifications, were the Great Pyramid of Khufu (see pyramid) or all the pyramids with or without the sphinx; the Hanging Gardens of Babylon, with or without th...

alkyl group

(Encyclopedia)alkyl group ălˈkĭl [key], in chemistry, group of carbon and hydrogen atoms derived from an alkane molecule by removing one hydrogen atom (see radical). The name of the alkyl group is derived from t...

cyano group

(Encyclopedia)cyano group sīˈənō, sī-ănˈō [key], in chemistry, functional group that consists of a carbon atom joined to a nitrogen atom by a triple bond; it can be joined to an atom or another group by a s...

encounter group

(Encyclopedia)encounter group: see group psychotherapy. ...

hydroxyl group

(Encyclopedia)hydroxyl group hīdrŏkˈsĭl [key], in chemistry, functional group that consists of an oxygen atom joined by a single bond to a hydrogen atom. An alcohol is formed when a hydroxyl group is joined by ...

amino group

(Encyclopedia)amino group, in chemistry, functional group that consists of a nitrogen atom attached by single bonds to hydrogen atoms, alkyl groups, aryl groups, or a combination of these three. An organic compound...