hamacratic

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• amacratic — amacratic, a. (æməˈkrætɪk) [improp. for hamacratic, f. Gr. ἅµα together + κράτ ος strength, power + ic.] Uniting the actinic rays of the solar speculum into one focus, as an amacratic lens. Mod. Dicts. cite Sir J. Herschel …   Useful english dictionary