noun, plural ac·tu·ar·ies.
Insurance. a person who computes premium rates, dividends, risks, etc., according to probabilities based on statistical records.
(formerly) a registrar or clerk.
- actus reus,
Origin of actuary
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
noun plural -aries
a person qualified to calculate commercial risks and probabilities involving uncertain future events, esp in such contexts as life assurance
Word Origin for actuary
C16: (meaning: registrar): from Latin āctuārius one who keeps accounts, from actum public business, and acta documents, deeds. See act, -ary
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
1550s, "registrar, clerk," from Latin actuarius "copyist, account-keeper," from actus "public business" (see act (n.)). Modern insurance office meaning first recorded 1849.
Online Etymology Dictionary, © 2010 Douglas Harper
A mathematician who uses statistics to calculate insurance premiums.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.