Quick Definition
πεντηκοστή, ῆς, ἡ n.f. Pentecost
Strong's Definition
feminine of the ordinal of 4004; fiftieth (2250 being implied) from Passover, i.e. the festival of "Pentecost"
KJV Usage: Pentecost
UBS Dictionary of the Greek New Testament
noun, f. | -ῆς | πέντε
51.8 · Festivals
Pentecost a Jewish harvest festival celebrated on the fiftieth day after Passover In most languages the festival of Pentecost is identified simply by a borrowed term based on the Greek expression πεντηκοστή. Some languages, however, use a phrase such as ‘the festival of the fiftieth day,’ and then in a footnote explain the fact that this was a harvest or thanksgiving festival occurring fifty days after Passover.
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
πεντηκοστή, -ῆς, 7, (SC. ἡμέρα ; fem. of πεντηκοστός fiftieth), [fr. Plat. down.], Pentecost (prop. the fiftieth day after the Passover, Tob. ii.1; 2 Mace. xii. 32; [Philo de septen. § 21; de decal. § 30; ef. W. 267), 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 (Ex. xxiii. 16; Lev. xxiii. 15 sq.; Deut. xvi. 9): Acts ii. 1; xx. 16; 1 Co. xvi. 8, (Joseph. antt. 3, 10,6; [14, 13, 4; ete.]). [BB. DD. (esp. Ginsburg in Alex.’s Kitto) 5. v. Pentecost; Hamburger, Real-Encycl. i.s. v. Wochenfest ; Edersheim, The Temple, ch. xiii.]
Mounce Concise Greek Dictionary
πεντηκοστή pentēkostē 3x
Pentecost, or the Feast of Weeks; one of the three great Jewish festivals, so called because it was celebrated on the fiftieth day, reckoning from the second day of the feast of unleavened bread, i.e., from the 16th day of Nisan, Acts 2:1; 20:16; 1 Cor. 16:8*
Abbott-Smith Greek Lexicon
πεντηκοστός, -ή, -όν,
[in LXX for חֲמִשִּׁים, Le 25:10, 11, IV Ki 15:23, 27; I Mac4, II Mac 14:4; ἡ π., To 2:1, II Mac 12:32*;]
fiftieth. As subst., ἡ π.; (sc. μερίς), at Athens, a tax of two per cent.;
(sc. ἡμέρα, i.e. the fiftieth day after the Passover), Pentecost, the second of the three great Jewish feasts (To 2:1, II Mac 12:32; ἑορτὴ ἑβδομάδων, De 16:10, al.): Ac 2:1 20:16, I Co 16:8.†
Liddell-Scott-Jones — Greek-English Lexicon
πεντηκοστή (pentēkostē) — Pentecost. Included with: πεντηκοστ-ός, ή, όν, fiftieth, [Refs 5th c.BC+]
II. substantive πεντηκοστή, ἡ,
II.1. (i.e. μερίς), fiftieth part: hence, tax of two per century. on exports and imports, at Athens, [Refs 5th c.BC+]; at Halicarnassus, [Refs 3rd c.BC+]; τῶν πρηθέντων τελείτω π. [Refs 4th c.BC+]; = Latin quinquagesima, [Refs 2nd c.AD+] invented a new sort of composition of two per century. in lieu of his cavalry service, i. e. paid this instead of it, [Refs 4th c.BC+]
II.2. (i.e. ἡμέρα), fiftieth day (after the Passover), [LXX]; ἡ ἡμέρα τῆς Π. [NT]