Dictionary.com
Thesaurus.com
Synonyms

actinometer

American  
[ak-tuh-nom-i-ter] / ˌæk təˈnɒm ɪ tər /

noun

  1. a device for measuring intensity of radiation, especially that of the sun.

actinometer British  
/ ˌæktɪnəʊˈmɛtrɪk, ˌæktɪˈnɒmɪtə /

noun

  1. an instrument for measuring the intensity of radiation, esp of the sun's rays

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
actinometer Scientific  
/ ăk′tə-nŏm′ĭ-tər /

  1. Any of several instruments used to measure radiation, such as a pyrheliometer.

Other Word Forms

  • actinometric adjective
  • actinometrical adjective
  • actinometry noun

Etymology

Origin of actinometer

First recorded in 1825–35; actino- + -meter

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.