Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

Word Explorer
Children's Dictionary
Help
Help
Help
Multi-word Results
cosmic noise interference from radio waves beyond the earth; galactic noise.
galactic noise radio waves originating from within the Milky Way.
Johnson noise the thermal background noise heard on a radio receiver.
white noise a sound that is a mixture of all the audible frequencies, each at about the same intensity.