The Collaborative International Dictionary
Allotropical
Allotropic \Al`lo*trop"ic\ ([a^]l`l[-o]*tr[o^]p"[i^]k), Allotropical \Al`lo*trop"ic*al\ (-[i^]k*al), a. [Cf. F. allotropique.] Of or pertaining to allotropism. -- Al`lo*trop"ic*al*ly, adv.
Allotropic state, the several conditions which occur in a case of allotropism.
Wiktionary
allotropical
a. (context chemistry rare English) Of or pertaining to an element that exhibits allotropy.
WordNet
allotropical
adj. of or related to or exhibiting allotropism; "carbon and sulfur and phosphorus are allotropic elements" [syn: allotropic]