operation

[ op-uh-rey-shuh n ]
/ ˌɒp əˈreɪ ʃən /

noun


Nearby words

  1. operating microscope,
  2. operating room,
  3. operating system,
  4. operating table,
  5. operating theatre,
  6. operation barbarossa,
  7. operation desert storm,
  8. operation overlord,
  9. operation sealion,
  10. operational

Origin of operation

1350–1400; Middle English operacioun < Latin operātiōn- (stem of operātiō), equivalent to operāt(us) (see operate) + -iōn- -ion

Related formsmis·op·er·a·tion, nounpre·op·er·a·tion, nounre·op·er·a·tion, nounsub·op·er·a·tion, noun

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for operation


British Dictionary definitions for operation

operation

/ (ˌɒpəˈreɪʃən) /

noun

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

Word Origin and History for operation

operation

n.

late 14c., "action, performance, work," also "the performance of some science or art," from Old French operacion "operation, working, proceedings," from Latin operationem (nominative operatio) "a working, operation," from past participle stem of operari "to work, labor" (in Late Latin "to have effect, be active, cause"), from opera "work, effort," related to opus (genitive operis) "a work" (see opus). The surgical sense is first attested 1590s. Military sense of "series of movements and acts" is from 1749.

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for operation

operation

[ ŏp′ə-rāshən ]

n.

A surgical procedure, usually using instruments, for remedying an injury, ailment, defect, or dysfunction.
The act, manner, or process of functioning.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for operation

operation

[ ŏp′ə-rāshən ]

Medicine A surgical procedure for remedying an injury, ailment, defect, or dysfunction.
Mathematics A process or action, such as addition, substitution, transposition, or differentiation, performed in a specified sequence and in accordance with specific rules.
A logical operation.
Computer Science An action resulting from a single instruction.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.