• synonyms

pellicle mirror

noun Photography.
  1. a fixed mirror in a single-lens reflex camera that reflects some of the light entering the lens to the ground-glass view screen while permitting most of the light to pass through to the film.
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Origin of pellicle mirror

in reference to the thin, partially reflective coating covering such mirrors
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018