hexakaidecahedronEtymologyFrom Ancient Greek ἑξα- (hexa-, “six”) + καί (kaí, “and”) + δέκᾰ (dékă, “ten”) + -hedron. Compare Ancient Greek ἑκκαίδεκα (hekkaídeka, “sixteen”).hexakaidecahedron means synonym of hexadecahedron. Lexicurio rates it Rare gem — a strength score of 82 out of 100.nounSynonym of hexadecahedron.“In structure I, the unit cell contains 136 water molecules which are arranged so that they form 16 pentagonal dodecahedra (small cavities) and 8 hexakaidecahedra (large cavities).”