01 n. Any right line passing through the center of a figure or body, as a circle, conic section, sphere, cube, etc., and terminated by the opposi…
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1.
Any right line passing through the center of a figure or body, as a circle, conic section, sphere, cube, etc., and terminated by the opposite boundaries; a straight line which bisects a system of parallel chords drawn in a curve.(Geom.)
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2.
The length of a straight line through the center of an object from side to side; width; thickness; as, the diameter of a tree or rock.
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3.
The distance through the lower part of the shaft of a column, used as a standard measure for all parts of the order. See Module.(Arch.) See: Module
Phrases & compounds
Conjugate diameters —
See under Conjugate.