Ac"tu*a*ry (#), n.; pl. Actuaries (#). [L. actuarius copyist, clerk, fr. actus, p. p. of agere to do, act.]
1. Law
A registar or clerk; -- used originally in courts of civil law jurisdiction, but in Europe used for a clerk or registar generally.
2.
The computing official of an insurance company; one whose profession it is to calculate for insurance companies the risks and premiums for life, fire, and other insurances.
© Webster 1913.