negative feedback

negative feedback

noun Electronics.
See under feedback (def. 1).
Dictionary.com Unabridged

feed·back

[feed-bak]
noun
1.
Electronics.
a.
the process of returning part of the output of a circuit, system, or device to the input, either to oppose the input (negative feedback) or to aid the input (positive feedback).
2.
the furnishing of data concerning the operation or output of a machine to an automatic control device or to the machine itself, so that subsequent or ongoing operations of the machine can be altered or corrected.
3.
a reaction or response to a particular process or activity: He got very little feedback from his speech.
4.
evaluative information derived from such a reaction or response: to study the feedback from an audience survey.
5.
Psychology. knowledge of the results of any behavior, considered as influencing or modifying further performance. Compare biofeedback.
EXPAND
6.
Biology. a self-regulatory biological system, as in the synthesis of some hormones, in which the output or response affects the input, either positively or negatively.
COLLAPSE

Origin:
1915–20; noun use of verb phrase feed back
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Collins
World English Dictionary
negative feedback
 
n
See feedback

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

negative feedback n.
Feedback that reduces the output of a system.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
negative feedback  
Feedback in which the output quantity or signal lowers the input quantity or signal. Negative feedback is used in natural and artificial regulatory mechanisms, as well as in the design of oscillators.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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