/ ˈæktʃuəri; NAmE -eri/ noun
( pl. -ies ) a person whose job involves calculating insurance risks and payments for insurance companies by studying how frequently accidents, fires, deaths, etc. happen
► ac·tu·ar·ial / ˌæktʃuˈeəriəl; NAmE -ˈeriəl/ adjective
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WORD ORIGIN
mid 16th cent. (originally denoting a clerk or registrar of a court): from Latin actuarius bookkeeper, from actus event, thing done, act- done, from the verb agere , reinforced by the French noun acte . The current sense dates from the mid 19th cent.