τρίμηνον

From LSJ

φιλεῖ δέ τοι, δαιμόνιε, τῷ κάμνοντι συσπεύδειν θεός → you know, my good fellow, when a man strives hard, a god tends to lend him aid

Source

English (Strong)

neuter of a compound of τρεῖς and μήν as noun; a three months' space: three months.

Russian (Dvoretsky)

τρίμηνον: (ῐ) τό трехмесячный промежуток, три месяца Polyb.