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An unconscious defense mechanism used to allay anxiety by denying the existence of important conflicts, troublesome impulses, events, actions, or illness.
Synonym(s): negation
[M.E., fr, O.Fr., fr. L. denegare, to say no]
Farlex Partner Medical Dictionary © Farlex 2012


A denial, contradiction, or negative statement.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.


An unconscious defense mechanism used to allay anxiety by denying the existence of important conflicts or troublesome impulses.
Synonym(s): negation.
[M.E., fr, O.Fr., fr. L. denego, to say no]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

Patient discussion about negation

Q. is her2 positive more agressive than her2 negative? i know someone with her2 positive breast cancer and her doctor said it was more difficult to detect upon its return if it came back i want to know if it is true and what can she do to detect it earlier

A. Over-expression of her2/neu, a specific molecule in the breast cancer cell is indeed considered to convey worse prognosis, and suggest the need for chemotherapy and immunotherapy with Herceptin. However, the decision is much more complicated and should be made on case by case basis after consulting a professional.

Q. Rising PSA to 10 with two negative biospies? Expect cancer? 67 yrs old in good health otherwise.

A. High values don't always mean it's cancer. At 67 years old, you're prostate is most likely enlarging, resulting in the higher PSA results. And after two negative biopsies, it sounds like you're in the clear. Like Brandon said though, keep up with your regular check ups.

Q. Does the cooking have a negative effect on the protein content of the food? I have heard that high temperatures cooking breaks the protein, so does the cooking have a negative effect on the protein content of the food?

A. Yes. Proteins can be denatured by heat, but only when the protein structure is delicate or is exposed to extremely high temperatures for long time. You must remember that breaking of protein is the physical-chemical process where the physical or chemical structure of a protein is rearranged. So cooking will not reduce on the nutritive value of the food until it’s cooked at cooking temperatures.

More discussions about negation
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References in periodicals archive ?
"I will not sign any decision or any recommendation for Cabinet related to this issue and hence there is no need for any citizen to take the burden in presenting any application," Chehayeb said, in a statement carried by the state-run National News Agency.
"We have not signed a new agreement, but we have been discussing a draft.
"The fact that Ivanov announced that he will not sign, will, once again return the decision of the Government to Parliament for the second vote, and that decision becomes valid because it is an international agreement, not a law.
Senate Majority Leader Vicente Sotto III said that he did not sign the resolution because it could be misused.
'I will not sign because Malala cannot call upon me to sign an affidavit.
The source said that it is with a heavy heart that Richards has told City that he will not sign a new deal and the club has now accepted that the defender would be leaving, the report added.
"The region's cabinet does not sign contracts to buy arms from any side without the federal government's permission," General Jalal Kareem told Aswat al-Iraq.
"Peru will not sign any agreement that impedes it from submitting any country's citizens to the jurisdiction of the International Criminal Court," then-Foreign Minister Manuel Rodriguez remarked in 2004.
The primates of the West Indies, the Southern Cone, and Jerusalem and the Middle East have also objected to the letter, saying they had not signed it.
The taxpayer did not sign the SFRs; instead, he sought a redetermination in Tax Court, which dismissed for failure to state a claim in February 1998.
Robert did help draft the Declaration but did not sign it.