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diametral

 - 2 dictionary results

di⋅am⋅e⋅tral

  [dahy-am-i-truhl]
Use diametral in a Sentence
–adjective
1. of a diameter.
2. forming a diameter.
Origin:
1350–1400; ME < ML diametrālis < L diametr(os) diameter + -ālis -al 1

Related forms:
di⋅am⋅e⋅tral⋅ly, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To diametral
di·am·e·ter   (dī-ām'ĭ-tər)   
n.  

  1. Abbr. d or diam. Mathematics

    1. A straight line segment passing through the center of a figure, especially of a circle or sphere, and terminating at the periphery.

    2. The length of such a segment.

  2. Thickness or width.

  3. 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.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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