adamantoid means A crystal characterized by being bound by 48 equal triangles; a hexoctahedron. Lexicurio rates it Sui generis — a strength score of 89 out of 100.
Etymology
From Ancient Greek ἀδάμας (adámas, “invincible”) + -ειδής (-eidḗs, “form”). Equivalent to adamant + -oid.
noun
- A crystal characterized by being bound by 48 equal triangles; a hexoctahedron.