cross-section

(noun) a section created by a plane cutting a solid perpendicular to its longest axis. Synonyms: cross section.

(noun) a sample meant to be representative of a whole population. Synonyms: cross section.

(noun) (physics) the probability that a particular interaction (as capture or ionization) will take place between particles; measured in barns. Synonyms: cross section.

(adj) representing a plane made by cutting across something at right angles to its length. Synonyms: cross-section(prenominal), cross-sectional. Example: "Cross-section views of the neck."