noun, verb ·Uncommon ·Advanced level

Definitions

Noun

1. 1
   Any of several instruments used to measure various aspects of the intensity of light.
2. 2
   photographic equipment that measures the intensity of light wordnet
3. 3
   measuring instrument for measuring the luminous intensity of a source by comparing it (visually or photoelectrically) with a standard source wordnet

Verb

1. 1
   To measure some aspect of light (from a star) using a photometer.

Synonyms

All synonyms

direction finderequipmentexposure meterilluminometerilluminometerinstrument

Etymology

From photo- + -meter.

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