Semidiameter Definition

sĕmē-dī-ămĭ-tər, sĕmī-
noun
Half a diameter; radius.
Webster's New World
Half the angular diameter of a celestial body with a visible disk, as the moon.
Webster's New World

Other Word Forms of Semidiameter

Noun

Singular:
semidiameter
Plural:
semidiameters

Origin of Semidiameter

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semidiameter