noun Thermodynamics, Electricity.
a wide spectrum of electromagnetic noise appearing in electronic circuits and devices as a result of the temperature-dependent random motions of electrons and other charge carriers.
Compare shot effect.
Origin of thermal noise
First recorded in 1925–30
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
electrical noise caused by thermal agitation of conducting electrons
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012