- noun (written as cross-section)a typical representative range
- noun (written as cross-section)a measure of the effective area or size of an atom or nucleus that represents a target for interaction with another particle or radiation prior to fission or ionisation
- A section formed by cutting an object through an axis, usually at a right angle to said axis. For instance, such a section in a wire or a waveguide.
- A graphical representation of a cross section (1).
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