Checking saved dictionary data and trusted language sources. This will stop automatically if a source does not respond.
Pronunciation varies by accent · noun
(physics) An instrument used to measure the heating power of electromagnetic radiation, especially that of solar radiation..
Use actinometer when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Actinometer means (physics) An instrument used to measure the heating power of electromagnetic radiation, especially that of solar radiation..
Common synonyms include heliothermometer.
The opposite depends on the specific sense.
Use actinometer where its definition matches the intended context.
FreeDictionaryAPI.com / Wiktionary · Original source · CC BY-SA 4.0
Dictionary data is provided by FreeDictionaryAPI.com and sourced from Wiktionary under its stated license.