ψαμμακόσιοι

αι, α, αι, α
A. sand-hundred, Com. word formed from ψάμμος after the analogy of διακόσιοι, τριακόσιοι, etc., to denote a countless multitude, ψ. θεαταί Eup. 286 (ψαμμοκ‐ v. l. ap.Suid.), cf. Ath. 15.671a; also ὀνόματα ψ. grandiloquent terms, Id. 6.230d.—So the exaggerated form ψαμμακοσιογάργαροι, αι, α, Ar. Ach. 3 (v.l. ψαμμοκ‐): cf. γάργαρα.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project