Dictionary entry

τετράγωνος

G. Abbott-Smith's A Manual Greek Lexicon of the New Testament

τετράγωνος, -ον

(< τετρα-, v. supr., + γωνία), [in LXX for רָבוּעַ and cogn. forms;]

square: Re 21:16 (Hdt., Plat., al.).†