preexposure

or pre-ex·po·sure

[ pree-ik-spoh-zher ]

noun
  1. exposure beforehand.

  2. Photography. the exposing of a film to even light, before photographing a subject, to increase its sensitivity.

Origin of preexposure

1
First recorded in 1935–40; pre- + exposure

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024