from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. noting or pertaining to a mineral grain that does not have its characteristic crystalline form but has a form impressed on it by surrounding grains; anhedral
- adj. in an unusual form; having a strange form
from The Century Dictionary and Cyclopedia
- In lithology, noting the mineral constituents of a rock when they are bounded by planes not formed as the result of their own molecular structure, but the result of their contact with other minerals also forming constituents of the same rock, which having crystallized first have impressed their form on those adjacent to them: the counterpart of idiomorphic. Also called allotriomorphic.
xeno- + -morphic (Wiktionary)