Dictionary entry

ἐρυθρός

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

ἐρυθρός, -ά, -όν

[in LXX for אֱדֹם, Is 63:2; ἐ. θάλασσα for סוּף -יָםEx 10:19, al.;]

red: ἡ ἐ. θάλασσα, the Red Sea, Ac 7:36, He 11:29.†