noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   Any of many very small prisms used, either to form a reflective surface, or to form an area in a camera's viewfinder that blurs if the image is not precisely in focus

Etymology

From micro- + prism.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.