Entry 4 senses · 2 variants Webster, 1913 Homœomorphism · Ho·mœ·o·mor·phism · IPA n. n. 01 n. A near similarity of crystalline forms between unlike chemical compounds. See Isomorphism. 1. A near similarity of crystalline forms between unlike chemical compounds. See Isomorphism. See: Isomorphism 02 n. Same as Homomorphy. 1. Same as Homomorphy.(Biol.) See: Homomorphy 2. The possession, in one species of plants, of only one kind of flowers; -- opposed to heteromorphism, dimorphism, and trimorphism.(Bot.) 3. The possession of but one kind of larvæ or young, as in most insects.(Zool.)