a person whose job involves calculating insurance risks and payments for insurance companies by studying how frequently accidents, fires, deaths, etc. happenWordfinderinsuranceactuary,annuity,cover,excess,insurance,no-claims bonus,policy,premium,risk,underwriteSee related entries:ProfessionsWord Originmid 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.
See actuary in the Oxford Advanced American Dictionary