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| di·am·e·ter [ dī ámmətər ] (plural di·am·e·ters) |
noun |
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| Definition: |
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1. line through center of circle: a straight line running from one side of a circle or other rounded geometric figure through the center to the other side, or the length of this line
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2. width: the width or thickness of something, especially something circular or cylindrical
  10 inches in diameter
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3. magnifying power of lens: the unit of measurement for the magnifying power of a lens
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| [14th century. Via French< Latin diametrus< Greek diametros (grammē) "(line) that measures through" < metron "measure"] |
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| di·am·e·tral adjective |
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