Diameter

n.	1.	(Geom.) 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.
	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.
	3.	(Arch.) 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. Conjugate diameters See under Conjugate.

Noun	1.	diameter - the length of a straight line passing through the center of a circle and connecting two points on the circumference Synonyms: diam
	2.	diameter - a straight line connecting the center of a circle with two points on its perimeter (or the center of a sphere with two points on its surface)

diameter - The diameter of a graph is the maximum value of the minimum distance between any two nodes.

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