cross section

noun

1
a
: a cutting or piece of something cut off at right angles to an axis
also : a representation of such a cutting
2
: a measure of the probability of an encounter between particles such as will result in a specified effect (such as scattering or capture)
3
: a composite representation typifying the constituents of a thing in their relations
cross-section transitive verb
cross-sectional adjective

Examples of cross section in a Sentence

a detailed cross section of the human brain The drawing showed the human brain in cross section. The class surveyed a cross section of the student body. The people in our neighborhood are a representative cross section of American society.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
An enormous cross section of artists — from pop hitmakers like Lil Nas X and Shaboozey to should-be country stars Mickey Guyton and Brittney Spencer to contemporary roots and indie stalwarts like Adia Victoria, Buffalo Nichols, and Allison Russell— can all partly thank Giddens for their career. Jonathan Bernstein, Rolling Stone, 23 Mar. 2025 The program serves a diverse cross section of the country. Renuka Rayasam, CBS News, 19 Feb. 2025 Rosenberg says a vast cross section of Americans benefit from the science that the agency provides - from weather forecasts to charts that recreational boaters use. Julia Simon, NPR, 5 Feb. 2025 Reducing the cross section of the trailer is the most effective way to reduce the drag and increase the range. Brad Templeton, Forbes, 20 Jan. 2025 See All Example Sentences for cross section

Word History

First Known Use

1835, in the meaning defined at sense 1a

Time Traveler
The first known use of cross section was in 1835

Browse Nearby Words

Cite this Entry

“Cross section.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cross%20section. Accessed 17 Apr. 2025.

Kids Definition

cross section

noun
1
a
: a cutting made across something (as a log or an apple)
b
: a representation of a cross section
a cross section of a blood vessel
2
: a number of persons or things selected from a group to stand for the whole
cross-sectional
ˈkrȯs-ˈsek-sh(ə-)nəl
adjective

Medical Definition

cross section

noun
: a cutting or piece of something cut off at right angles to an axis
also : a representation of such a cutting
cross-sectional adjective

More from Merriam-Webster on cross section

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