ALTERNATION

alternation

(noun) successive change from one thing or state to another and back again; “a trill is a rapid alternation between the two notes”

Source: WordNet® 3.1

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Etymology

Noun

alternation (countable and uncountable, plural alternations)

The reciprocal succession of (normally two) things in time or place; the act of following and being followed by turns; alternate succession, performance, or occurrence

(religion) The response of the congregation speaking alternately with the minister.

(linguistics) Ablaut.

(linguistics) A pattern by which more than one construct is possible, as with "Alice cooked Bob dinner" and "Alice cooked dinner for Bob".

(logic) The "inclusive or" truth function.

(mathematics) A sequence that alternates between positive and negative values; sometimes incorrectly used to mean permutation.

(computing) A construct in a regular expression that can match any of several specified subexpressions.

(geometry) A type of partial truncation of a polygon, polyhedron or tiling in which alternate vertices are removed.

Source: Wiktionary

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Al`ter*na"tion, n. Etym: [L. alternatio: cf. F. alternation.]

1. The reciprocal succession of things in time or place; the act of following and being followed by turns; alternate succession, performance, or occurrence; as, the alternation of day and night, cold and heat, summer and winter, hope and fear.

2. (Math.)

Definition: Permutation.

3. The response of the congregation speaking alternately with the minister. Mason. Alternation of generation. See under Generation.

Source: Webster’s Unabridged Dictionary 1913 Edition

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