periastron

Meanings

Plural: periastra, periastrons

Noun

That point of the orbit of a celestial body which is closest to the star around which the body is orbiting.

Origin / Etymology

From Ancient Greek περί (perí, “around”) + ἄστρον (ástron, “star”).

Antonyms

apastron

Scrabble Score: 12

periastron is not valid in Scrabble (US) TWL Dictionary
periastron is not valid in Scrabble (MW) Merriam-Webster Dictionary
periastron is a valid Scrabble Word in International Collins CSW Dictionary

Words With Friends Score: 14

periastron is a valid Words With Friends word