actuarian

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
Dictionary.com Unabridged
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
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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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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