| 单词 | diameter |
| 释义 | diameter /duy am"i teuhr/, n. 1. Geom. a. a straight line passing through the center of a circle or sphere and meeting the circumference or surface at each end. b. a straight line passing from side to side of any figure or body, through its center. 2. the length of such a line. 3. the width of a circular or cylindrical object. [1350-1400; ME diametre < OF < L diametros < Gk diámetros diagonal, diameter, equiv. to dia- DIA- + -metros, deriv. of métron METER1] |
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