par·a·phil·i·a (pār'ə-fĭl'ē-ə, -fēl'yə) n. Any of a group of psychosexual disorders characterized by sexual fantasies, feelings, or activities involving a nonhuman object, a nonconsenting partner such as a child, or pain or humiliation of oneself or one's partner. Also called sexual deviation. par'a·phil'i·ac n.