πεντηκοστή
ὅτι μέντοι καὶ ἡ χρῆσις τῶν τρόπων, ὥσπερ τἆλλα πάντα καλὰ ἐν λόγοις, προαγωγὸν ἀεὶ πρὸς τὸ ἄμετρον, δῆλον ἤδη, κἂν ἐγὼ μὴ λέγω → however, it is also obvious, even without my saying so, that the use of figures of speech, like other literary adornments, is something that has always tempted toward excess
English (LSJ)
A v. πεντηκοστός 11.
English (Strong)
feminine of the ordinal of πεντήκοντα; fiftieth (ἡμέρα being implied) from Passover, i.e. the festival of "Pentecost": Pentecost.
English (Thayer)
πεντηκοστῆς, ἡ (namely, ἡμέρα; feminine of πεντηκοστός fiftieth) (from Plato down.), Pentecost (properly, the fiftieth day after the Passover, Philo de septen. § 21; de decal. § 30; cf. Winer's Grammar, 26)), the second of the three great Jewish festivals; celebrated at Jerusalem yearly, the seventh week after the Passover, in grateful recognition of the completed harvest (Josephus, Antiquities 3,10, 6; (14,13, 4; etc.)). (BB. DD. (especially Ginsburg in Alex.'s Kitto) under the word <TOPIC:Pentecost>; Hamburger, Real-Encycl. 1, under the word, Wochenfest; Edersheim, The Temple, chapter xiii.)