ac ‧ tu ‧ a ‧ ry /ˈæktʃuəri $ -tʃueri/ BrE AmE noun ( plural actuaries ) [countable]
[ Date: 1500-1600 ; Language: Latin ; Origin: actuarius , from actum ; ⇨ ↑ ACT 1 ]
someone whose job is to advise insurance companies on how much to charge for insurance, after calculating the risks
—actuarial /ˌæktʃuˈeəriəl $ -ˈer-/ adjective