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valerian, in botany

(Encyclopedia)CE5 Valerian, Valeriana officinalis valerian, common name for some members of the Valerianaceae, a family chiefly of herbs and shrubs of temperate and colder regions of the Northern Hemisphere; a ...

value, in colorimetry

(Encyclopedia)value, in colorimetry: see color.

value, in economics

(Encyclopedia)value, in economics, worth of a commodity in terms of other commodities, or in terms of money (see price). Value depends on both desirability and scarcity. The marginal theory of value, pioneered in t...

variation, in biology

(Encyclopedia)variation, in biology: see Darwinism. ...

variation, in music

(Encyclopedia)variation, in music, a compositional device in which certain features of a musical unit, e.g., phase, are altered while others are retained in a subsequent statement of the unit. Modifications include...

bellflower, in botany

(Encyclopedia)bellflower or bluebell, name commonly used as a comprehensive term for members of the Campanulaceae, a family of chiefly herbaceous annuals or perennials of wide distribution, characteristically found...

veronica, in botany

(Encyclopedia)veronica, in botany: see figwort. ...

walleye, in medicine

(Encyclopedia)walleye: see strabismus.

walleye, in zoology

(Encyclopedia)walleye or walleyed pike: see perch. ...

valence, in chemistry

(Encyclopedia)valence, combining capacity of an atom expressed as the number of single bonds the atom can form or the number of electrons an element gives up or accepts when reacting to form a compound. Atoms are c...