καιρός
Alt. καιρός,
I. "due measure, proportion, fitness", Hes., etc.; καιροῦ πέρα beyond "measure, unduly", Aesch., etc.; μείζων τοῦ καιροῦ, Lat. justo major, Xen.
II. of Place, "a vital part" of the body, like τὸ καίριον, Eur.
III. of Time, "the right point of time, the proper time or season" of action, "the exact or critical time", Lat. opportunitas, καιρὸς βραχὺ μέτρον ἔχει "time and tide wait for no man," Pind.; καιρὸν παριέναι to let "the time" go by, Thuc.; καιροῦ τυχεῖν Eur.; καιρὸν λαμβάνειν Thuc.; ἔχειν καιρόν to be "in" season, id=Thuc.:— καιρός ἐστι, c. inf., it is "time" to do, Hdt., etc.
2. adverbial usages, εἰς or ἐς καιρόν "in season, at the right time, opportune", Hdt., etc.; so, ἐπὶ καιροῦ Dem.;— κατὰ καιρόν Hdt.; πρὸς καιρόν Soph., etc.; and, without Preps., καιρῷ or καιρόν "in season", attic;—all these being opp. to ἀπὸ καιροῦ, Plat.; παρὰ καιρόν Eur.; πρὸ καιροῦ "prematurely", Aesch.
3. pl., ἐν τοῖς μεγίστοις κ. at the most "critical times", Xen., etc.
IV. "advantage, profit, fruit", τινος "of or from" a thing, Pind.; τί καιρὸς καταλείβειν; what avails it to..? Eur.; οὗ κ. εἴη where it was "convenient or advantageous", Thuc.; μετὰ μεγίστων καιρῶν with the greatest "odds", the most "critical results", id=Thuc.