cross section

Definition of cross section

n.1.a flat plane cutting through a three-dimensional object, usually at right angles to the longest axis of the object.
2.any visual representation of a cross section{1}, showing the internal structure of the object in the plane of the cross section; as, the technician prepared a series of MRI cross sections of the skull.
3.a thin slice of an object made by cutting it transversely; as, to view a cross section of a bacterium with an electron microscope after staining the DNA; cross sections were prepared with a microtome.
4.a representative sample of a complex group; as, the town contained a cross section of the American population.
5.(Physics) a measure of the probability that a nucleus will interact in a specified way with a bombarding particle, expressed as the effective area that the nucleus presents to the particle; - called also nuclear cross section.
v. t.1.to create one or a series of cross sections{3} by cutting (an object) into thin slices.

Related Words

plane section, profile, section
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-cross section-
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