noun, plural ped·i·a [ped-ee-uh, pee-dee-uh] /ˈpɛd i ə, ˈpi di ə/. Crystallography.
- a crystal form having only a single face, without a symmetrical equivalent: unique to the triclinic system.
noun, plural ped·i·a [ped-ee-uh, pee-dee-uh] /ˈpɛd i ə, ˈpi di ə/. Crystallography.