Definition of semidiameter in English:

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semidiameter

Pronunciation: /ˌsɛmɪdʌɪˈamɪtə/

noun

Geometry
Half of a diameter.
Example sentences
  • The moon will, at the full, be totally eclipsed, if its latitude is less than the difference between its own semidiameter, and that of the earth's shadow.
  • By the semidiameter of a celestial object, is meant the angle which the radius of its apparent circular disc subtends at the eye of the observer.

For editors and proofreaders

Line breaks: semi|diam¦eter

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