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Pegasus, in astronomy

(Encyclopedia)Pegasus pĕgˈəsəs [key], in astronomy, northern constellation lying SW of Andromeda and SE of Cygnus. It is named for the mythological winged horse Pegasus. The constellation is easily recognized b...

Pasiphaë, in astronomy

(Encyclopedia)Pasiphaë pəsĭfˈəēˌ [key], in astronomy, one of the 39 known moons, or natural satellites, of Jupiter. ...

orange, in botany

(Encyclopedia)orange, name for a tree of the family Rutaceae (rue, or orange, family), native to China and Indochina, and for its fruit, the most important fresh fruit of international commerce. Its physical charac...

orders in council

(Encyclopedia)orders in council, in British government, orders given by the sovereign on the advice of all or some of the members of the privy council, without the prior consent of Parliament. Orders in council, fi...

Orion, in astronomy

(Encyclopedia)Orion, in astronomy, constellation located on the celestial equator. It is one of the most conspicuous and easily recognizable constellations in the entire sky. From ancient times it has been mentione...

ornament, in architecture

(Encyclopedia)ornament, in architecture, decorative detail enhancing structures. Structural ornament, an integral part of the framework, includes the shaping and placement of the buttress, cornice, molding, ceiling...

marguerite, in botany

(Encyclopedia)marguerite: see daisy.

Arethusa, in botany

(Encyclopedia)Arethusa: see orchid.

argonaut, in zoology

(Encyclopedia)argonaut, in zoology: see paper nautilus. ...

ash, in botany

(Encyclopedia)ash, in botany, any plant of the genus Fraxinus of the family Oleaceae (olive family), trees and shrubs mainly of north temperate regions. The ashes are characterized by small clusters of greenish flo...