Surgery

n. treatment of diseases and injuries by medical operation; operation performed by a surgeon; room in which surgical operations are performed

In medicine, surgery (from the Greek  meaning "hand work") is the medical specialty that treats diseases or injuries by operative manual and instrumental treatment. Persons described as surgeons are commonly medical practitioners, but the term is also applied to dentists and veterinarians.The term surgery can also refer to the place where surgery is performed, or simply the office of a physician, dentist, or veterinarian.
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Surgery /sur·gery/ 1. the branch of medicine that treats diseases, injuries, and deformities by manual or operative methods. 2. [more]Surgery - Community and Resources

Noun
1. the branch of medical science that treats disease or injury by operative procedures; "he is professor of surgery at the Harvard Medical School"
(hypernym) medical science
(class) maxillofacial
2. a room where a doctor or dentist can be consulted; "he read the warning in the doctor's surgery"
(hypernym) room
(classification) United Kingdom, UK, Great Britain, GB, Britain, United Kingdom of Great Britain and Northern Ireland
3. a room in a hospital equipped for the performance of surgical operations; "great care is taken to keep the operating rooms aseptic"
(synonym) operating room, OR, operating theater, operating theatre
(hypernym) hospital room
4. a medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body; "they will schedule the operation as soon as an operating room is available"; "he died while undergoing surgery"
(synonym) operation, surgical operation, surgical procedure, surgical process
(hypernym) medical procedure
(hyponym) ablation, extirpation, cutting out, excision
(part-meronym) hemostasis, haemostasis, hemostasia, haemostasia
(class) freeze

(n.)
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.
  

(n.)
A surgeon's operating room or laboratory.