actinograph

[ ak-tin-uh-graf, -grahf ]

noun

1. a recording actinometer.

Other Words From

• ac·tin·o·graph·ic [ak-tin-, uh, -, graf, -ik, ak-t, uh, -noh-], adjective
• ac·ti·nog·ra·phy [ak-t, uh, -, nog, -r, uh, -fee], noun

Word History and Origins

Origin of actinograph¹

First recorded in 1830–40; actino- + -graph