Lexical Definition

‎μυριάς‎ myriás (moo-ree'-as) myriad G:N-F
from ‎μύριοι‎

ten thousand.

Usage: 10 forms in 34 verses
Form Translated As     In Verse(s)
μυριάσιν his ten thousands LXX.1Sam.18.7 • LXX.1Sam.29.5
myriads LXX.Mic.6.7 • Jude.1.14
to myriads Heb.12.22
μυριάσι myriads LXX.Deut.33.2
μυριάσ myriads LXX.Ps.91.7
μυριάδων myriads LXX.Gen.24.60 • LXX.Song.5.10 • Luke.12.1
of myriads Rev.5.11
ten thousands LXX.Ps.3.6 • Rev.9.16
μυριάδεσ myriads LXX.Deut.33.17 • LXX.Jonah.4.11 • Acts.21.20 • Rev.5.11
ten thousand LXX.Ezra.2.64
ten thousands LXX.Ezra.2.69 • LXX.Neh.7.66 • LXX.Dan.7.10
μυριάδασ myriads LXX.Dan.11.12 • Acts.19.19
of myriads LXX.Num.10.36
ten thousands LXX.Exod.38.26 • LXX.Deut.32.30 • LXX.Neh.7.71 • LXX.Neh.7.72 • LXX.Esth.9.16
μυρίασιν his ten thousands LXX.1Sam.21.11
μυρίασ ten thousand LXX.1Chr.29.7
μυρίαδασ ten thousands LXX.1Sam.18.8
tens of thousands LXX.Lev.26.8
δισμυριάδεσ δισμυριάδεσ twice ten thousand Rev.9.16

Abbott-Smith

μυριάς, -άδος, ἡ (< μυρίος), [in LXX chiefly for רְבָבָה;]
ten thousand, a myriad: pl., Ac 19:19, Re 5:11 9:16; hyperb., of vast numbers, Lk 12:1, Ac 21:20, He 12:22, Ju 14.†

Abbott-Smith References

Book Refs
Luke 12:1
Acts 19:19 · 21:20
Hebrews 12:22
Jude 1:14
Revelation 5:11 · 9:16

Liddell-Scott-Jones

μυριάς-άς, δος, ἡ,

Attic dialect genitive plural μυριαδῶν [Refs 2nd c.AD+]:—number of [Refs]myriad, [Refs 5th c.BC+] times [Refs 3rd c.AD+]: frequently of countless numbers, [Refs 5th c.BC+]; of money (i.e. δραχμῶν), [Refs 5th c.BC+]; of corn (i.e. μεδίμνων), [Refs 5th c.BC+]; also (i.e. ἀρταβῶν), [Refs 3rd c.AD+]

__II as adjective, φύστις μ. ἀνδρῶν [Refs 5th c.BC+]