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insurance. a person who computes premium rates, dividends, risks, etc., according to probabilities based on statistical records.
(formerly) a registrar or clerk.
contemporary examples

social security encourages behavior which undermines the actuarial soundness of social security itself.
sorry, folks: one way or the other, you’ll never be able to completely count on retirement megan mcardle march 14, 2013

but while support for ending the death penalty was cold and actuarial, opposition to the measure was emotional and raw.
death penalty survives in california, but three-strikes law cut back david r. dow november 8, 2012

that miscalculation could mean serious trouble in terms of actuarial soundness.
with more compet-tion and choice, obamacare might not be so horrible nick gillespie may 11, 2014

at 79 years of age, actuarial tables say a woman is likely to live another 9.74 years.
who’s best for the kids? marcia clark july 14, 2009

there is also literally a conversation about contemporary practices in actuarial mathematics.
saw, scrutinized choire sicha october 22, 2009

historical examples

the financial and actuarial basis of the scheme has been very carefully studied by the light of all available information.
liberalism and the social problem winston spencer churchill

he outsold many men with actuarial minds, and extended knowledge.
the psychology of salesmanship william walker atkinson

the per capita cost of $1.23 in 1906 is far below the actuarial cost.
beneficiary features of american trade unions james b. kennedy

the business of life insurance upon the continent of europe has given an extraordinary stimulus to actuarial studies.
encyclopaedia britannica, 11th edition, volume 14, slice 6 various

few seem to be aware how greatly the knowledge of what may be termed the actuarial side of heredity has advanced in recent years.
introduction to the science of sociology robert e. park

noun (pl) -aries
a person qualified to calculate commercial risks and probabilities involving uncertain future events, esp in such contexts as life -ssurance
adj.

1853, from actuary + -al (1). related: actuarially.
n.

1550s, “registrar, clerk,” from latin actuarius “copyist, account-keeper,” from actus “public business” (see act (n.)). modern insurance office meaning first recorded 1849.
actuary [(ak-chooh-er-ee)]

a mathematician who uses statistics to calculate insurance premiums.