cross section also cross-sec·tion (krôs s ksh n, kr s-)n. 1. a. A section formed by a plane cutting through an object, usually at right angles to an axis. b. A piece so cut or a graphic representation of such a piece. 2. Physics A measure of the probability that an encounter between particles will result in the occurrence of a particular atomic or nuclear reaction. Also called collision cross section. 3. Statistics A sample meant to be representative of a whole population. 4. Informal A variety; a diversity. cross -section·al (krôssksh-nl, krs-) adj. |
ThesaurusLegend: Synonyms Related Words Antonyms
| Adj. | 1. | cross-sectional - of or relating to a cross section; "a cross-sectional slice" |
| 2. | cross-sectional - representing a plane made by cutting across something at right angles to its length; "cross-section views of the neck" crosswise - lying or extending across the length of a thing or in a cross direction; "a crosswise street"; "the crosswise dimension" |
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