surgery

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The branch of medicine that deals with the diagnosis and treatment of injury, deformity, and disease by the use of instruments.
• noun Treatment based on such medicine, typically involving the removal or replacement of diseased tissue by cutting.
• noun A procedure that is part of this treatment; an operation.
• noun An operating room or a laboratory of a surgeon or of a hospital's surgical staff.
• noun A physician's, dentist's, or veterinarian's office.
• noun The period during which a physician, dentist, or veterinarian consults with or treats patients in the office.

from The Century Dictionary.

• noun The work of a surgeon; surgical care; therapy of a distinctly operative kind, such as cutting-operations, the reduction and putting up of fractures and dislocations, and similar manual forms of treatment.
• noun Pl. surgeries (-iz). A place where surgical operations are performed, or where medicines are prepared; in Great Britain, the consulting-office and dispensary of a general practitioner.
• noun See the adjectives.

from the GNU version of the Collaborative International Dictionary of English.

• noun The art of healing by manual operation; that branch of medical science which treats of manual operations for the healing of diseases or injuries of the body; that branch of medical science which has for its object the cure of local injuries or diseases, as wounds or fractures, tumors, etc., whether by manual operation or by medicines and constitutional treatment.
• noun A surgeon's operating room or laboratory.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun medicine A procedure involving major incisions to remove, repair, or replace a part of a body.
• noun medicine The medical specialty related to the performance of surgical procedures.
• noun A room or department where surgery is performed.
• noun UK A doctor's consulting room.
• noun UK Any arrangement where people arrive and wait for an interview with certain people, similar to a doctor's surgery.
• noun finance, bankruptcy, slang A pre-packaged bankruptcy or "quick bankruptcy".
• noun topology The production of a manifold by removing parts of one manifold and replacing them with corresponding parts of others.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a room where a doctor or dentist can be consulted
• noun a room in a hospital equipped for the performance of surgical operations
• noun the branch of medical science that treats disease or injury by operative procedures
• noun a medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body