monophysitism
A Christian theological doctrine that Christ has only one nature, as opposed to the orthodox view of two natures (divine and human). Used in historical and doctrinal discussions.
Monophysitism is the doctrine that Christ has a single nature in which his divinity and humanity are completely united.
From 単 (single) + 性 (nature) + 論 (theory/discourse). A direct translation of the theological term 'monophysitism'.