Abbott-Smith Manual Greek Lexicon
τρίμηνος (G5150)
1 τρίμηνος , -ον ( τρεῖς , μήν ) [in LXX (neut.): Ge 38:24 , IV Ki 23:31 B 24:8 , II Ch 36:2 , 9 ( חֳדָשִׁים שָׁלוֹשׁ ) * ;] of three months ; as subst., τὸ τ. (= cl. ἡ τ. ), a space of three months (Polyb., al.; LXX): He 11:23 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain