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1. to perform an operation.
2. the subject of an experiment who has undergone a specific surgical procedure.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.


1. To work on the body by the hands or by means of cutting or other instrument.
2. To perform a surgical procedure.
3. To cause a movement of the bowels; said of a laxative or cathartic remedy.
4. Used to describe the action of using an instrument to achieve a diagnostic or therapeutic endpoint (for example, to operate an instrument).
[L. operor, pp. -atus, to work, fr. opus, work]
Farlex Partner Medical Dictionary © Farlex 2012


v. oper·ated, oper·ating, oper·ates
1. To perform a function; work: The motor operates smoothly.
2. To perform surgery.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.


To perform a therapeutic procedure on the body with the hands or with instruments.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012


1. To work on the body manually or with an instrument.
2. To perform a surgical procedure.
3. Used to describe the action of using an instrument to achieve a diagnostic or therapeutic endpoint.
Medical Dictionary for the Dental Professions © Farlex 2012

Patient discussion about operate

Q. I am worried how safe the operation would be and the post surgery complications? My wife has a cyst in her right breast and further tests are going on. Doctors have advised to go for an operation. I am worried how safe the operation would be and the post surgery complications?

A. My friend, surgery for the cyst in breast is common. Any cyst in breast indicates breast cancer. These surgeries are very safe. Initially they used to cut the complete breast to remove the cyst. Now with the advanced technology, only the cyst would be removed without harming other tissues. Rather complete removal is done these days, but that depend upon the severity of the cancer. These surgeries are proven with results. If the cyst is less they will remove only the affected portion and yes they do remove some nearby tissues because there some cancer cells may lay and can arrive again. For any post surgery complications, chemotherapy treatment is also available.

Q. Should I do surgery for varicoceles? I went to an urologist and he recommended surgery, but I don’t know if I should do this…is it dangerous? Can I live with the varicocele?

A. I don’t see your problem, you said an urologist advised you to do so- that should be enough no? if you don’t trust him, go and get a second opinion. The surgery is not that bad, an hour later and you are walking out. Vary small risk of complication. I did it and it was fine.

Q. What types of gastric bypass surgeries are there? I heard all sorts of options for gastric bypass are available. What is the most in use?

A. Bariatric surgeries or – gastric bypass surgeries for weight loss fall into three categories: Restrictive procedures make the stomach smaller to limit the amount of food intake, malabsorptive techniques reduce the amount of intestine that comes in contact with food so that the body absorbs fewer calories, and combination operations employ both restriction and malabsorption. The exact one to be done should be decided with the physician according to each patients abilities and pre-operative function level.

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References in periodicals archive ?
RSS further contended that it qualified for exemption because it was organized and operated to perform services integral to the exempt purposes of RHS (its tax-exempt parent) and Redlands Hospital (its tax-exempt affiliate).
Air Canada launched twice-weekly flights to Las Vegas from Edmonton aboard an A319 and from Winnipeg aboard a CRJ705 operated by Jazz.
The third, fourth, and fifth largest depository institutions in the market are operated by large multistate banking organizations, each of which controls between 4 percent and 10 percent of market deposits.
British Airways operated about 90% of its full schedule, dropping three long-haul and 32 short-haul departures.
Bmi, the second-largest carrier at Heathrow, said it operated more than 66% of its normal LHR schedule.
Capacity rose 3.3% to 28.04 billion ASKs on the same 90 aircraft operated by SIA in the 2005 period.
"There's a wide disparity among airlines in how fleets are owned and operated," he explained.
AirAsia is taking over the majority of domestic routes once operated by Malaysia Airlines and will transfer operations of its six F50s and five Twin Otters to FAX.
Although results are not directly comparable to the year-ago period when the airlines operated independently, the figure represents a significant improvement over an approximate combined pro forma loss of $46 million by the constituent companies, America West Airlines ($2 million) and US Airways Inc.
The airline, which at one time operated scheduled services between Gatwick and Lisbon, has a small fleet of Airbus A320 and A330 aircraft and operates scheduled flights to Sao Tome and Guinea Bissau to Lisbon as well as charter services.