PRISM

Optical device (5)

Solution has appeared in 2 crosswords (2 across and 0 down):

• Quick crossword No 15,982 — 2021-07-27 23:00:46
  22A: Device used to invert an image (5)
• Quick crossword No 15,792 — 2020-12-17 00:00:23
  23A: Optical device (5)