Do·ce·tism/dōˈsēdizəm/Learn to pronounce noun: Docetism
- the doctrine, important in Gnosticism, that Christ’s body was not human but either a phantasm or of real but celestial substance, and that therefore his sufferings were only apparent.
Origin

mid 19th century: from medieval Latin Docetae (the name, based on Greek dokein ‘seem’, given to a group of 2nd-century Christian heretics) + -ism.