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embryo screening

(Encyclopedia) embryo screening, procedure (see genetic testing) in which a single cell is removed from an embryo two or three days after it has been conceived through in vitro fertilization and…

Tibetan art and architecture

(Encyclopedia) Tibetan art and architecture have been almost entirely religious in character (see Tibetan Buddhism). The art of Tibetan Lamaism retains strong elements drawn from the forms of both…

willow

(Encyclopedia) willow, common name for some members of the Salicaceae, a family of deciduous trees and shrubs of worldwide distribution, especially abundant from north temperate to arctic areas. The…

water bug

(Encyclopedia) water bug, name for a large number of water-living bugs, comprising several families of the order Hemiptera (true bugs). All have jointed, sharp, sucking beaks, breathe air, and…

steroids

(Encyclopedia) CE5 Two examples of steroids steroids, class of lipids having a particular molecular ring structure called the cyclopentanoperhydro-phenanthrene ring system. Steroids differ from…

muskrat

(Encyclopedia) muskrat, North American aquatic rodent. The common muskrats, species of the genus Ondatra, are sometimes called by their Native American name, musquash. They are found in marshes,…

letters

(Encyclopedia) letters, in literature, written messages, ranging from those addressed to the public and those sent from lover to lover, to business letters and thank-you notes. The common quality…

Dallas

(Encyclopedia) Dallas, city (2020 pop. 1,304,379), seat of Dallas co., N Tex., on the Trinity River near the junction of its three forks; inc. 1871.…

deconstruction

(Encyclopedia) deconstruction, in linguistics, philosophy, and literary theory, the exposure and undermining of the metaphysical assumptions involved in systematic attempts to ground knowledge,…

cicada

(Encyclopedia) cicadacicadasĭkāˈdə [key], large, noise-producing insect of the order Homoptera, with a stout body, a wide, blunt head, protruding eyes, and two pairs of membranous wings. The front…