τετράδυμος

ον
A. fourfold, Opp. C. 2.181; τ. τίκτειν to bear four at a birth, Str. 15.1.22. (Cf. δίδυμος, τρίδυμος, ἑπτάδυμος.)
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project