crosssection

cross section also cross-sec·tion (krôsʹsĕkʹshən, krŏsʹ-) 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.
  crossʹ-secʹtion·al (krôsʹsĕkʹshə-nəl, krŏsʹ-) adj.

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Universalium. 2010.

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