Quick Definition
a myriad, ten thousand
Strong's Definition
a ten-thousand; by extension, a "myriad" or indefinite number
Derivation: from G3463 (μύριοι);
KJV Usage: ten thousand
Thayer's Greek Lexicon
μυριάς, μυριαδος, ἡ (μυρίος) (from Herodotus down), the Sept. for ψΐαΘαΘδ and ψΔαΜε;
a. ten thousand: Act_19:19 (on which passage see ἀργύριον, 3 at the end).
b. plural with the genitive equivalent to an innumerable multitude, an unlimited number ((like our myriads), the Latinsexcenti, German Tausend): Luk_12:1; Act_21:20; Rev_5:11 (not Rec.st); (here L T δισμυριάδες, which see); used simply, of innumerable hosts of angels: Heb_12:22 (here G L Tr put a comma after μυριάσιν); Jud_1:14; Deu_33:2; Dan_7:10.
Mounce Concise Greek Dictionary
μυριάς myrias 8x
a myriad, ten thousand, Act_19:19 ;
indefinitely, a vast multitude, Luk_12:1 ; Act_21:20 ; Heb_12:22 ; Jud_1:14 ; Rev_5:11 ; Rev_9:16
Abbott-Smith Greek Lexicon
μυριάς , -άδος , ἡ
( < μυρίος ),
[in LXX chiefly for H7233 ;]
t en thousand, a myriad: pl ., Act_19:19 , Rev_5:11 ; Rev_9:16 ; hyperb., of vast numbers, Luk_12:1 , Act_21:20 , Heb_12:12 , Jud_1:14 .†
**† δισ -μυριάς , -άδος , ἡ ,
[in LXX : 2Ma_6:1-31 * ;]
twice ten thousand: Rev_9:16 ( LT ; δὶς μυριάδες , WH ; δύο μ ., Rec. ).†
Moulton & Milligan — Vocabulary of the Greek NT
μυριάς [page 419]
For μυριάς = 10,000, as in Act_19:19 , it is sufficient to cite P Tebt II. 308 .8 (A.D. 174) (= Chrest. I. p. 376 ) τιμὴν βίβλου μυριάδων δύο , the price of 20,000 papyrus stalks (Edd.), P Amh II. 107 .10 (A.D. 185) κριθῆς ἀρταβῶν μυριάδων δύο , 20,000 artabae of barley, and P Oxy VIII. 1115 .14 (A.D. 284) μυριάδας τρῖς καὶ ὀκτακισχιλ [ίους , 38,000. The sense of unlimited numbers, like our myriads, as in Rev_5:11 al. , is seen in the Christian amulet P Iand 6 .10 (v/vi A.D.) ᾧ ( sc. θεῷ ) παραραστκουσιν ( l. παραστήκουσιν ) μύριαι μαιρια̣τες ( l. μυριάδες ) ἀγγέλω [ν : for other exx. see the editor s note ad l. , and cf. Moulton Egyptian Rubbish-heaps, p. 31 f.
Liddell-Scott — Intermediate Greek Lexicon
μυριάς μυ_ριάς, άδος, "a number of" 10, 000, "a myriad", Hdt. , etc.; indefinitely of "countless numbers", Eur. :—when μυριάς, μυριάδες are used absol. of money, δραχμῶν must be supplied, Ar. ; when of corn, μεδίμνων, Dem. adj. "consisting of" 10, 000, Aesch. , Eur.
STEPBible — Tyndale Abridged Greek Lexicon
μυριάς, -άδος, ἡ
(μυρίος), [in LXX chiefly for רְבָבָה ;]
ten thousand, a myriad: pl., Act.19:19, Rev.5:11 9:16; hyperb., of vast numbers, Luk.12:1, Act.21:20, Heb.12:12, Ju 14.†
(AS)