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old age
(Encyclopedia)old age: see geriatrics.mental age
(Encyclopedia)mental age: see intelligence.Bronze Age
(Encyclopedia)Bronze Age, period in the development of technology when metals were first used regularly in the manufacture of tools and weapons. Pure copper and bronze, an alloy of copper and tin, were used indiscr...Stone Age
(Encyclopedia)Stone Age: see Paleolithic period; Mesolithic period; Neolithic period. ...age grade and age set
(Encyclopedia)age grade and age set, differentiation of social role based on age, commonly found in small-scale societies of North America and East Africa. Age sets are a type of sodality (nonresidential groups tha...literature
(Encyclopedia)literature. For the literature of England, see English literature; for that of Germany, see German literature, and so forth. For the forms of literary art, see biography, essay, novel, theater, letter...Lewes, George Henry
(Encyclopedia)Lewes, George Henry lo͞oˈĭs [key], 1817–78, English critic and author. As editor of the Leader (1850–54) and of the Fortnightly Review (1865–66), Lewes distinguished himself as a critic. Infl...New Stone Age
(Encyclopedia)New Stone Age: see Neolithic period. ...Old Stone Age
(Encyclopedia)Old Stone Age: see Paleolithic period. ...old-age pension
(Encyclopedia)old-age pension: see pension; social security. ...Browse by Subject
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