surgery

[sur-juh-ree]
noun, plural surgeries for 3–5.
1.
the art, practice, or work of treating diseases, injuries, or deformities by manual or operative procedures.
2.
the branch of medicine concerned with such treatment.
3.
treatment, as an operation, performed by a surgeon.
4.
a room or place for surgical operations.
5.
British. a doctor's or dentist's office or office hours.

Origin:
1250–1300; Middle English surgerie < Old French cirurgerie chirurgery

presurgery, adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
surgery (ˈsɜːdʒərɪ)
 
n , pl -geries
1.  the branch of medicine concerned with treating disease, injuries, etc, by means of manual or operative procedures, esp by incision into the body
2.  the performance of such procedures by a surgeon
3.  (Brit) a place where a doctor, dentist, etc, can be consulted
4.  (Brit) an occasion when an MP, lawyer, etc, is available for consultation
5.  (US), (Canadian) an operating theatre where surgical operations are performed
 
[C14: via Old French from Latin chirurgia, from Greek kheirurgia, from kheir hand + ergon work]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

surgery sur·ger·y (sûr'jə-rē)
n.

  1. The branch of medicine that deals with the diagnosis and treatment of injury, deformity, and disease by manual and instrumental means.

  2. A surgical operation or procedure, especially one involving the removal or replacement of a diseased organ or tissue.

  3. An operating room or a laboratory of a surgeon or of a hospital's surgical staff.

  4. The skill or work of a surgeon.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
Nearly half could be helped by a procedure that's become routine in many
  nations-cataract surgery.
Carotid artery surgery is a procedure to restore proper blood flow to the brain.
At stake is a product that could revolutionize emergency medical treatment and
  surgery.
Laser surgery is a medical procedure that uses laser light to remove diseased
  tissues or treat bleeding blood vessels.
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