an idea or opinion formed beforehand a bias; prejudice
WordReference Random House Learner's Dictionary of American English © 2026
pre•con•cep•tion /ˌprikənˈsɛpʃən/USA pronunciation n. [countable]
WordReference Random House Unabridged Dictionary of American English © 2026- an opinion based on bias, with no allowance made for knowledge or evidence:foolish preconceptions about the dangers of catching AIDS by shaking hands.
pre•con•cep•tion
(prē′kən sep′shən),USA pronunciation n.
pre′con•cep′tion•al, adj.
- a conception or opinion formed beforehand.
- bias.
- pre- + conception 1615–25
Collins Concise English Dictionary © HarperCollins Publishers::
'preconception' also found in these entries (note: many are not synonyms or translations):