preconception

Etymology

pre- + conception

noun

  1. An opinion formed before obtaining adequate evidence, especially as the result of bias or prejudice.
    He told RAIL: "We had no preconceptions, but you would assume a newer train to have better air quality than an older one. We found that was not necessarily the case. October 6 2021, Paul Clifton, “Network News: RSSB research exposes poor air quality on diesel trains”, in RAIL, number 941, page 14
  2. A prejudice that prevents rational consideration of an issue.

adj

  1. (medicine) Preconceptional.

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