misconception

noun

1. (countable, uncountable)A mistaken belief, a wrong idea.

   “There are several common misconceptions about the theory of relativity.”

   “You're obviously under the misconception that I care about your problems.”

   “He had the misconception that the word "misconception" meant becoming pregnant with a girl.”

   “From November 28 to December 8, 1958, the CCP Central Committee held its sixth plenum in Wuhan, Hopei^([sic – meaning Hupei]), and at the end of the session it issued a revealing resolution that declared there had been some misconception about the system and that party committees throughout the countryside should make full use of the five months from December 1958 to April 1959 to tidy up the communes.”

   “It is a common misconception that anal intercourse is an exclusively homosexual male practice. […] As elsewhere in Africa, little data exist on the role of anal sex in HIV acquisition in women in the general population […]”