Insurance. a person who computes premium rates, dividends, risks, etc., according to probabilities based on statistical records.
(formerly) a registrar or clerk.
noun (pl) -aries
a person qualified to calculate commercial risks and probabilities involving uncertain future events, esp in such contexts as life assurance
1550s, “registrar, clerk,” from Latin actuarius “copyist, account-keeper,” from actus “public business” (see act (n.)). Modern insurance office meaning first recorded 1849.
A mathematician who uses statistics to calculate insurance premiums.
- Acute ascending paralysis
acute ascending paralysis acute ascending paralysis n. Paralysis having a rapid course, beginning in the legs and progressively involving the trunk, arms, and neck. Also called Landry’s paralysis.
- Acute arch
noun another name for lancet arch Historical Examples The latter has an acute arch, without moulding, constructed within it, apparently to strengthen the walls. Bell’s Cathedrals: Southwark Cathedral George Worley
- Acute bisectrix
See under (def 1). Crystallography. an imaginary line either the acute angle (acute bisectrix) or the obtuse angle (obtuse bisectrix) of the optic axes of a biaxial crystal. Geometry. a bisector. noun (pl) bisectrices (baɪˈsɛktrɪˌsiːz) another name for bisector the bisector of the angle between the optic axes of a crystal
- Acute brain disorder
acute brain disorder acute brain disorder n. An organic brain syndrome that is caused by temporary reversible impairment of brain functioning and is characterized by mood changes that range from mild disorientation to delirium and can include more serious personality and behavior disturbances. Also called acute neuropsychologic disorder.