al·lo·trop·ic \| ̷ ̷ ̷ ̷|träpik\adjective Etymology: International Scientific Vocabulary allotropy + -ic 1.: of, relating to, or exhibiting allotropy < allotropic chemical changes > < sulfur is known in a number of allotropic forms > 2.: showing a variation of form : existent in a different form < dialects with allotropic developments >