noun
any surgical procedure that involves anesthesia or respiratory assistance
• Ant: ↑minor surgery
• Hypernyms: ↑operation, ↑surgery, ↑surgical operation, ↑surgical procedure, ↑surgical process
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noun : surgery involving a risk to the life of the patient; specifically : an operation upon an organ within the cranium, chest, abdomen, or pelvic cavity — compare minor surgery
Useful english dictionary. 2012.