noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   Any of various photometers used either to measure the variation of densities over small areas, or to measure accurately small changes in illumination.
2. 2
   special kind of densitometer that measures density variations over a very small area wordnet

Etymology

From micro- + photometer.

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