Signal feedback having at least some component thereof in opposite phase with the signal at the point where the signal feedback is applied.
A process that results in a reduction in the response of a system to an external influence. For example. increased plant productivity in response to global warming would be a negative feedback on warming. because the additional growth would act as a sink for CO2. reducing the atmospheric CO2 concentration.
Negative Feedback has been defined 4 different ways in documents like USPC Consolidated Glossary, Glossary, Glossary, and 1 more.