Meaning of diameter

di•am•e•ter

Pronunciation: (dī-am'i-tur), [key]
— n.
    1. a straight line passing through the center of a circle or sphere and meeting the circumference or surface at each end.
    2. a straight line passing from side to side of any figure or body, through its center.
  1. the length of such a line.
  2. the width of a circular or cylindrical object.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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