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cross section

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See synonyms for: cross section / cross-sections on Thesaurus.com

noun

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Origin of cross section

First recorded in 1825–35

Definition for cross section (2 of 2)

cross-section
[ kraws-sek-shuhn, kros- ]
/ ˈkrɔsˈsɛk ʃən, ˈkrɒs- /

adjective

Also cross-sec·tion·al. of or relating to a cross section.

verb (used with object)

to make or divide into a cross section.

Origin of cross-section

First recorded in 1875–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Example sentences from the Web for cross section

British Dictionary definitions for cross section

cross section

noun

maths a plane surface formed by cutting across a solid, esp perpendicular to its longest axis
a section cut off in this way
the act of cutting anything in this way
a random selection or sample, esp one regarded as representativea cross section of the public
surveying a vertical section of a line of ground at right angles to a survey line
physics a measure of the probability that a collision process will result in a particular reaction. It is expressed by the effective area that one participant presents as a target for the other

Derived forms of cross section

cross-sectional, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for cross section

cross section

In particle physics, an expression of the probability of the occurrence of an event, typically the scattering of subatomic particles, over a given area.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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