[kraws-sek-shuh n, kros-]
- Also cross-sec·tion·al. of or relating to a cross section.
- to make or divide into a cross section.
Origin of cross-section
First recorded in 1875–80
- a section made by a plane cutting anything transversely, especially at right angles to the longest axis.
- a piece so cut off.
- a photograph, diagram, or other pictorial representation of such a section.
- the act of cutting anything across.
- a typical selection; a sample showing all characteristic parts, relationships, etc.: a cross section of American opinion.
- Surveying. a vertical section of the ground surface taken at right angles to a survey line.
- Also called nuclear cross section. Physics. a quantity expressing the effective area that a given nucleus presents as a target to a bombarding particle, giving a measure of the probability that the particle will induce a reaction.
Origin of cross section
First recorded in 1825–35
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for cross-section
The show presents a cross-section of works that blur the line between the humorous and absurd.These Young Artists Want You to Feel Something
November 29, 2013
“I just want the work to reach as large a cross-section of people as possible,” Montgomery said.Robert Montgomery’s Words of Wisdom
September 12, 2013
The Tony Award nominees, announced Tuesday, are a cross-section of Most Talented and Most Popular.What the Critics Missed in the Tony Award Nominations
May 3, 2012
The Supreme Court is not supposed to comprise a cross-section of the American public, or of the American legal profession.In Defense of the Ivy League
May 14, 2010
I saw 'em fur years, with a big cuttin' out to show the cross-section.The Spenders
Harry Leon Wilson
Note the shape of the cross-section of the hull at the different sections.Boys' Book of Model Boats
Raymond Francis Yates
A cross-section diagram from the outer ear to the lobes of the brain.A Handbook of Health
A' is the edge view, B' is the side view and C' is a cross-section.Handwork in Wood
Figure 154 shows a sketch of the cross-section of the floor and girders.Concrete Construction
Halbert P. Gillette
- 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
Word Origin and History for cross-section
Online Etymology Dictionary, © 2010 Douglas Harper
- 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.