Monophysitism (from the Greek monos meaning 'one' and physis meaning 'nature') is the christological position that Christ has only one nature, as opposed to the Chalcedonian position which holds that Christ has two natures, one divine and one human.
E.g. Eutychianism. Then Monothelitism and Monoenergism. But Chalcedonianism. As opposed to Apollinarism or Miaphysitism. The Henotikon failed, alas. Docetists had support, yet opposed by Arians, and even semi-Docetists failed to field a consensus among Adoptionists and Psilanthropists. Acephali thrive, nonetheless, with or without Mongus or Mingus.
Dem daze waren't like some daze now.