noun \ˌak-tə-ˈnäm-ət-ər\

Definition of ACTINOMETER

: any of various instruments for measuring the intensity of incident radiation; especially : one in which the intensity of radiation is measured by the speed of a photochemical reaction
ac·ti·no·me·tric \-nō-ˈme-trik\ adjective
ac·ti·nom·e·try \-ˈnäm-ə-trē\ noun, plural ac·ti·nom·e·tries

Seen & Heard

What made you want to look up actinometer? Please tell us where you read or heard it (including the quote, if possible).

Get Our Free Apps
Voice Search, Favorites,
Word of the Day, and More
Join Us on FB & Twitter
Get the Word of the Day and More