ac‧tu‧a‧ry /ˈæktʃuəri $ -tʃueri/ noun (plural actuaries) [countable]
[Date: 1500-1600; Language: Latin; Origin: actuarius, from actum; ⇒ ACT¹]
someone whose job is to advise insurance companies on how much to charge for insurance, after calculating the risks
—actuarial /ˌæktʃuˈeəriəl $ -ˈer-/ adjective

[TahlilGaran] Dictionary of Contemporary English ▲