Link Centre Dictionary

cross section

cross·sec·tion

rare

noun

1.

a section created by a plane cutting a solid perpendicular to its longest axis

2.

a sample meant to be representative of a whole population

3.

(physics) the probability that a particular interaction (as capture or ionization) will take place between particles; measured in barns

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WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.