Try Our Apps


The Best Internet Slang


[foh-non] /ˈfoʊ nɒn/
noun, Physics.
a quantum of sound or vibratory elastic energy, being the analogue of a photon of electromagnetic energy.
Origin of phonon
First recorded in 1930-35; phon- + -on1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
Cite This Source
British Dictionary definitions for phonon


(physics) a quantum of vibrational energy in the acoustic vibrations of a crystal lattice
Word Origin
C20: from phono- + -on
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
Cite This Source
phonon in Science
The quantum of acoustic or vibrational energy. Phonons, like all quanta in quantum mechanics, have wavelike and particlelike properties. Phonons propagate through the vibrating material at the speed of sound in that material. Phonons are especially useful in mathematical models for calculating thermal and vibrational properties of solids.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of the Day

Difficulty index for phonon

Some English speakers likely know this word

Word Value for phonon

Scrabble Words With Friends

Nearby words for phonon