poly·mor·phous \|pälē|mȯrfəs, -lə̇|m-\adjective Etymology: Greek polymorphos multiform from poly- + -morphos -morphous : having or assuming various forms, characters, styles, or functions < a polymorphous god > as a.: polymorphic 2 b.: crystallizing with two or more different structures • poly·mor·phous·lyadverb • poly·mor·phous·nessnoun-es