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actinometer

[ ak-tuh-nom-i-ter ]
/ ˌæk təˈnɒm ɪ tər /
|
SEE MORE SYNONYMS FOR actinometer ON THESAURUS.COM

noun

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

RELATED WORDS

photometer, radiometer

Nearby words

actinoid, actinolite, actinology, actinomadura, actinomere, actinometer, actinomorphic, actinomyces, actinomyces bovis, actinomyces israelii, actinomycetaceae
Compare actinograph.

Origin of actinometer

First recorded in 1825–35; actino- + -meter
Related formsac·tin·o·met·ric [ak-tin-oh-me-trik, ak-tuh-noh-] /ækˌtɪn oʊˈmɛ trɪk, ˌæk tə noʊ-/, ac·tin·o·met·ri·cal, adjectiveac·ti·nom·e·try, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for actinometer

British Dictionary definitions for actinometer

actinometer

/ (ˌæktɪˈnɒmɪtə) /

noun

an instrument for measuring the intensity of radiation, esp of the sun's rays
Derived Formsactinometric (ˌæktɪnəʊˈmɛtrɪk) or actinometrical, adjectiveactinometry, noun
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

Science definitions for actinometer

actinometer

[ ăk′tə-nŏmĭ-tər ]

Any of several instruments used to measure radiation, such as a pyrheliometer.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.