GRC

τετράεδρος

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LSJ

ον, having four faces, πυραμίδες Iamb. in Nic. p. 93 P. ; Subst. -εδρον, τό, Hero Def. 99, Papp. 352.12, Theol.Ar. 24.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
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