Cross section
WordNet
noun
(1) (physics) the probability that a particular interaction (as capture or ionization) will take place between particles; measured in barns
(2) A sample meant to be representative of a whole population
(3) A section created by a plane cutting a solid perpendicular to its longest axis
WiktionaryText
Noun
- A section formed by a plane cutting through an object, usually at right angles to an axis.
- A sample meant to be representative of a whole population.
- The probability that a particular nuclear reaction will take place.