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Meaning of semidiameter | Babel Free

Noun CEFR C1

Definitions

The apparent radius of a star etc, when viewed from Earth.
A radius: half of a diameter.
archaic

Examples

“[B]etweene the ſphere of Saturne and the Firmament, there is ſuch an incredible and vaſt ſpace or diſtance (7000000. ſemidiameters of the earth, as Tycho [Brahe] calculates) void of ſtarres: [...]”

CEFR level

C1

Advanced
This word is part of the CEFR C1 vocabulary — advanced level.

See also

semidiameters semidiapason semidiapasons semidiapente semidiapentes semidiaphaneity