Lexical Definition

‎δέκατος‎ dékatos (dek'-at-os) tenth ^G:A
ordinal from ‎δέκα‎

tenth.

Abbott-Smith

δέκατος, -η, -ον (< δέκα), [in LXX for מַעֲשֵׂר and cognate forms ;]
tenth: Jo 1:40, Ac 19:9 (WH, txt., RV omit), Re 11:13; 21:20.†

Abbott-Smith References

Liddell-Scott-Jones

δέκατος

[Refs 4th c.AD+] δέκοτος [Refs 5th c.BC+], also Aeolic dialect in [Refs], η, ον: (δέκα):— tenth, Ἠώς [Refs 8th c.BC+]; as a round number, [Refs 8th c.BC+]

__II δεκάτη (i.e. μερίς), ἡ, tenth part, tithe, τᾶς δεκάτας δεκάταν [Refs 5th c.BC+]; τὰ ἐκ τῆς δ. the produce of the tenth, [Refs 4th c.BC+]
__II.2 δεκάτη (i.e. ἡμέρα), ἡ, the tenth day, [Refs 8th c.BC+]
__II.2.b δ. προτέρα· ἡ πρὸ εἰκάδος, ὡς ὑστέρα· ἡ μετ᾽ εἰκάδα, [Refs 5th c.AD+]
__II.3 festival on the tenth day after birth, when the child has a name given it, τὴν δ. θύειν to give a naming-day feast, [Refs 5th c.BC+]
__II.4 δεκάτα· τάξις, ἄθροισμα, καὶ ἡ τῶν εἴκοσιν ἁρμάτων τάξις, [Refs 5th c.AD+]
__II.5 δέκατον, τό, tenth part, [LXX]

_{LSJ Scripture Refs: LXX.Lev.23.13}