Definition of SEMIDIAMETER

semidiameter

Plural: semidiameters

Noun

  • the apparent radius of a celestial body when viewed as a disc from the earth
  • The apparent radius of a star etc, when viewed from Earth.
  • A radius: half of a diameter.

Origin / Etymology

From Middle English semidiametre, semydiametre, from Medieval Latin sēmidiameter, equivalent to semi- + diameter.

Scrabble Score: 17

semidiameter: valid Scrabble (US) TWL Word
semidiameter: valid Scrabble Word in Merriam-Webster MW Dictionary
semidiameter: valid Scrabble Word in International Collins CSW Dictionary

Words With Friends Score: 19

semidiameter: valid Words With Friends Word