diameter

di·am·e·ter   (dī-ām'ĭ-tər)    n.   Abbr. d or diam. Mathematics A straight line segment passing through the center of a figure, especially of a circle or sphere, and terminating at the periphery. The length of such a segment. Thickness or width. A unit for measuring the magnifying power of a microscope lens or telescope, equal to the number of times an object's linear dimensions are apparently increased. [Middle English diametre, from Old French, from Latin diametrus, from Greek diametros (grammē), diagonal (line) : dia-, dia- + metron, measure; see mē-2 in Indo-European roots.] di·am'e·tral (-trəl) adj.

diameter [(deye-am-uh-tuhr)]

A straight line passing through the center of a figure, especially a circle or sphere, and joining two opposite points on its circumference.

diameter 

Main Entry: di·am·e·ter
Pronunciation: dI-'am-&t-&r
Function: noun
1 : a unit of magnification for an optical instrumentequal to the number of times the linear dimensions of an object are apparently increased diameters>
2 : one of the maximal breadthsof a part of the body diameter of the inlet of the pelvis>

diameter di·am·e·ter (dī-ām'ĭ-tər)
n.

1. A straight line connecting two opposite points on the surface of a spherical or cylindrical body, or at the boundary of an opening or foramen, passing through the center of such body or opening.

2. The distance measured along such a line.

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