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attenuation (n.)
early 15c., of persons, "emaciation;" of diet, "reduction," from Latin attenuationem (nominative attenuatio) "a lessening," noun of action from past-participle stem of attenuare "to make thin, lessen, diminish," from assimilated form of ad "to" (see ad-) + tenuare "make thin," from tenuis "thin" (from PIE root *ten- "to stretch"). The general sense of "a making less dense" is from 1590s; specifically of electrical currents by 1838.
updated on September 28, 2022
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Attic