'Preconception' definitions:

Definition of 'preconception'

From: WordNet
noun
An opinion formed beforehand without adequate evidence; "he did not even try to confirm his preconceptions" [syn: preconception, prepossession, parti pris, preconceived opinion, preconceived idea, preconceived notion]
noun
A partiality that prevents objective consideration of an issue or situation [syn: bias, prejudice, preconception]

Definition of 'Preconception'

From: GCIDE
  • Preconception \Pre`con*cep"tion\, n. The act of preconceiving; conception or opinion previously formed. [1913 Webster]