homo·plas·tic \| ̷ ̷ ̷ ̷|plastik\adjective Etymology: International Scientific Vocabulary hom- + -plastic 1.: of or relating to homoplasy < homoplastic organ > 2.: of, relating to, or derived from another individual of the same species < homoplastic graft > • homo·plas·ti·cal·ly\-tə̇k(ə)lē\adverb