Dictionary entry

θηρίον

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

θηρίον, -ου, τό

(dimin. of θήρ), [in LXX chiefly for חַיָּה;]

a wild beast, beast: Mk 1:13, Ac 11:628:4, 5, Tit 1:12, He 12:20, Ja 3:7, Re 6:8; of Antichrist, Re 11:7, 13-20.†