Columbia Encyclopedia

Search results

500 results found

polyp and medusa

(Encyclopedia)CE5 Polyp and medusa stages in the life cycle of Obelia, representative of the phylum Cnidaria polyp and medusa, names for the two body forms, one nonmotile and one typically free swimming, found ...

population I and II

(Encyclopedia)population I and II, in astronomy: see stellar populations. ...

oxidation and reduction

(Encyclopedia)oxidation and reduction, complementary chemical reactions characterized by the loss or gain, respectively, of one or more electrons by an atom or molecule. Originally the term oxidation was used to re...

acids and bases

(Encyclopedia)acids and bases, two related classes of chemicals; the members of each class have a number of common properties when dissolved in a solvent, usually water. Another theory that provides a very broad ...

permutations and combinations

(Encyclopedia)permutations and combinations: see probability. ...

orchestra and orchestration

(Encyclopedia)CE5 Typical seating plan of a symphony orchestra orchestra and orchestration, an orchestra is a musical ensemble of mixed instruments based on strings and winds, under the direction of a conductor...

visit and search

(Encyclopedia)visit and search: see search, right of. ...

wickiup

(Encyclopedia)wickiup wĭkˈēŭpˌ [key], temporary dwelling of nomadic Native North Americans. It is a framework of arched poles covered by brush, bark, rushes, or mats. The wickiup is found among Native American...

party, political

(Encyclopedia)party, political, organization whose aim is to gain control of the government apparatus, usually through the election of its candidates to public office. Political parties take many forms, but their m...

Tymoshenko, Yulia Volodymyrivna

(Encyclopedia)Tymoshenko, Yulia Volodymyrivna, 1960–, Ukrainian political leader, prime minister of Ukraine (2005, 2007–10), b. Dnipro (Dnipropetrovsk). She studied economics and cybernetics at Dnipropetrovsk S...