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S___________
Definitions
the apparent radius of a celestial body when viewed as a disc from the earth
Word origin
From Middle English semidiametre, semydiametre, from Medieval Latin sēmidiameter, equivalent to semi- + diameter.
Used in a sentence
“[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: [...]”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer0 curated clues
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