denial

denial

1. the rejection of the truth of a proposition, doctrine, etc.

2. a psychological process by which painful truths are not admitted into an individual's consciousness

Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

denial

[di′nī·əl]

(mathematics)

negation

(psychology)

An unconscious defense mechanism in which an individual denies herself or himself recognition of an observation in order to avoid pain or anxiety.

McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.