| 单词 | function |
| 释义 | function /fungk"sheuhn/, n. 1. the kind of action or activity proper to a person, thing, or institution; the purpose for which something is designed or exists; role. 2. any ceremonious public or social gathering or occasion. 3. a factor related to or dependent upon other factors: Price is a function of supply and demand. 4. Math. a. Also called correspondence, map, mapping, transformation. a relation between two sets in which one element of the second set is assigned to each element of the first set, as the expression y = x2; operator. b. Also called multiple-value function. a relation between two sets in which two or more elements of the second set are assigned to each element of the first set, as y2 = x2, which assigns to every x the two values y = +x and y = -x. c. a set of ordered pairs in which none of the first elements of the pairs appears twice. 5. Geom. a. a formula expressing a relation between the angles of a triangle and its sides, as sine or cosine. b. See hyperbolic function. 6. Gram. a. the grammatical role a linguistic form has or the position it occupies in a particular construction. b. the grammatical roles or the positions of a linguistic form or form class collectively. 7. Sociol. the contribution made by a sociocultural phenomenon to an ongoing social system. v.i. 8. to perform a specified action or activity; work; operate: The computer isn't functioning now. He rarely functions before noon. 9. to have or exercise a function; serve: In earlier English the present tense often functioned as a future. This orange crate can function as a chair. [1525-35; < L function- (s. of functio) a performance, execution, equiv. to funct(us) (ptp. of fungi) performed, executed + -ion- -ION] |
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