Ideological defection from the party line (especially from orthodox communism)

Wiktionary Word definitions in Wiktionary
n. deviation from accepted beliefs or policies, especially from a prescribed form of Communism.

WordNet Word definitions in WordNet
n. ideological defection from the party line (especially from orthodox communism)

Wikipedia Word definitions in Wikipedia
For the Ffestiniog Railway 's use of the word "deviationist", see Ffestiniog Railway#The Llyn Ystradau Deviation . A deviationist is a person who expresses a deviation: an abnormality or departure. In Stalinism , deviationism is an expressed belief which ...