Hylomorphism (Greek ὑλο- hylo-, "wood, matter" + -morphism < Greek μορφή, morphē, "form") is a philosophical theory developed by Aristotle, which conceives substance as a compound of matter and form.
Read more about Hylomorphism: Matter and Form, Substantial Form, Accidental Form, and Prime Matter, Medieval Modifications, Teleology and Ethics, Modern Physics