Lexical Definition

‎μύριοι‎ mýrioi (moo'-ree-oi) myriad G:A
plural of an apparently primary word (properly, meaning very many)

ten thousand.

Usage: 5 forms in 9 verses
Form Translated As     In Verse(s)
μύριαι ten thousand LXX.Dan.7.10
μύρια ten thousand LXX.1Chr.29.7 • LXX.Esth.3.9 • LXX.Job.42.12
μυρίων of ten thousand Matt.18.24
ten thousand LXX.Esth.4.7
μυρίουσ ten thousand 1Cor.4.15 • 1Cor.14.19
μυρίοισ ten thousand LXX.Judg.20.10

Abbott-Smith

μυρίος, -α, -ον,
1. numberless, countless, infinite: I Co 4:15 14:19.
2. As a definite numeral, in pl., μύριοι, -αι, -α, ten thousand: Mt 18:24.†

Abbott-Smith References

Book Refs
Matthew 18:24
1 Corinthians 4:15 · 14:19

Liddell-Scott-Jones

Related to: μύριοι-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+]