n. pl. sur·ger·ies
1. The branch of medicine that deals with the diagnosis and treatment of injury, deformity, and disease by the use of instruments.
a. Treatment based on such medicine, typically involving the removal or replacement of diseased tissue by cutting: The athlete had surgery on his knee.
b. A procedure that is part of this treatment; an operation: The doctor performed three surgeries this morning.
3. An operating room or a laboratory of a surgeon or of a hospital's surgical staff: How long has the patient been in surgery?
4. Chiefly British
a. A physician's, dentist's, or veterinarian's office.
b. The period during which a physician, dentist, or veterinarian consults with or treats patients in the office.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2017 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The American Heritage Dictionary Blog
American Heritage Dictionary Products
The American Heritage Dictionary, 5th Edition
The American Heritage Dictionary of Idioms
The American Heritage Roget's Thesaurus
Curious George's Dictionary
The American Heritage Children's Dictionary
The American Heritage Dictionary of Indo-European Roots
The American Heritage Student Grammar Dictionary
The American Heritage Desk Dictionary + Thesaurus
The American Heritage Science Dictionary
The American Heritage Dictionary of Business Terms
The American Heritage Student Dictionary
The American Heritage Essential Student Thesaurus