noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   Alternative spelling of diopter. alt-of, alternative
2. 2
   a unit of measurement of the refractive power of a lens which is equal to the reciprocal of the focal length measured in meters; used by oculists wordnet

Synonyms

All synonyms

diopterdiopter

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