# Diameter

## Definition of Diameter

Di`am´e`ter
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.

## Related Words

air line, amplitude, area, axis, beeline, bigness, bisector, body, bore, boundary, breadth, bulk, caliber, center, chord, core, coverage, depth, diagonal, diaphragm, dimension, dimensions, direct line, directrix, divider, edge, equator, expanse, expansion, extension, extent, gauge, girth, great-circle course, greatness, halfway mark, heart, height, interior, kernel, largeness, length, line of demarcation, magnitude, mass, mean, measure, measurement, median, middle, midmost, midriff, midst, normal, nucleus, partition, perpendicular, proportion, proportions, radius, radius vector, range, reach, right line, scale, scope, secant, segment, semidiameter, shortcut, side, size, spread, straight, straight course, straight line, straight stretch, straightaway, streamline, tangent, thick, thick of things, transversal, vector, volume, waist, waistline, width, zone
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