actuary

[ak-choo-er-ee]
noun, plural actuaries.
1.
Insurance. a person who computes premium rates, dividends, risks, etc., according to probabilities based on statistical records.
2.
(formerly) a registrar or clerk.

Origin:
1545–55; < Latin āctuārius shorthand writer, clerk, variant (with u of the action noun āctus act) of āctārius (āct(a) deeds, documents + -ārius -ary)

actuarial [ak-choo-air-ee-uhl] , actuarian, adjective
actuarially, adverb
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
actuary (ˈæktʃʊərɪ)
 
n , pl -aries
a person qualified to calculate commercial risks and probabilities involving uncertain future events, esp in such contexts as life assurance
 
[C16: (meaning: registrar): from Latin āctuārius one who keeps accounts, from actum public business, and acta documents, deeds. See act, -ary]
 
actuarial
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

actuary
1550s, "registrar, clerk," from L. actuarius "copyist, account-keeper," from actus "public business" (see act). Modern insurance office meaning first recorded 1849. Related: Actuarial (1869).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Cultural Dictionary
actuary [(ak-chooh-er-ee)]

A mathematician who uses statistics to calculate insurance premiums.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Example sentences
More often, there is subtle pressure on the actuary to come up with projections that make the pension fund look good.
Instead, they receive nonbinding instructions from an actuary on how much to contribute.
She is a compensation consultant and he is an actuary.
Genetic testing information should not be used for actuary calculations.
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