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actinograph

[ ak-tin-uh-graf, -grahf ]
/ ækˈtɪn əˌgræf, -ˌgrɑf /
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noun

a recording actinometer.

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Origin of actinograph

First recorded in 1830–40; actino- + -graph
ac·tin·o·graph·ic [ak-tin-uh-graf-ik, ak-tuh-noh-], /ækˌtɪn əˈgræf ɪk, ˌæk tə noʊ-/, adjectiveac·ti·nog·ra·phy [ak-tuh-nog-ruh-fee], /ˌæk təˈnɒg rə fi/, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
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