Actinometer

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A device used to measure the heating power of electromagnetic radiation, especially that of solar radiation.
  2. 2
    an instrument for measuring the intensity of electromagnetic radiation (usually by the photochemical effect) wordnet

Etymology

From actino- + -meter.

Related phrases

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