(ˌhæməˌmiːlɪˈdeɪʃəs; -ˌmɛlɪ-) adj (Plants) of, relating to, or belonging to the Hamamelidaceae, a chiefly subtropical family of trees and shrubs that includes the witch hazel[C19: from New Latin Hamamelis type genus, from Greek: medlar, from hama together with + mēlon fruit]