physis in English dictionary physis Meanings and definitions of "physis" noun (Ancient Greek philosophy and theology) nature, as contrasted with law or custom noun (anatomy) The epiphyseal plate, a hyaline cartilage plate in the metaphysis at each end of a long bone, found in children and adolescents. more Grammar and declension of physis physis (uncountable) more Sample sentences with "physis" Declension Stem Try again Available translations Estonian French German Portuguese Swedish Tamil Authors