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Meaning of actinometry in English:

actinometry

Pronunciation /ˌaktɪˈnɒmɪtri/

noun

  • The use of an actinometer; measurement of light intensity with the aid of an actinometer.

Origin

Mid 19th century; earliest use found in Matthew Maury (1806–1873). From actino- + -metry, after actinometer.