# phonon

pho·nonPhysics a quantum of vibrational or sound energy in a crystal lattice or solid: often characterized as being heat energy

Origin of phonon

phon- +*-on,*as in photon

## phonon

noun

The quantum of acoustic or vibrational energy, considered as a quasiparticle and used especially in mathematical models to calculate thermal and vibrational properties of solids.

## phonon

Noun

(*plural* phonons)

Origin

From Ancient Greek *Ï†Ï‰Î½Î®* (phÅná¸—, “sound") + *-on*. Modelled after *photon*.

## phonon - Computer Definition

A quantum of sound. A phonon is the sound particle equivalent of a photon, which is a light particle. While photons travel in space, long wave phonons travel within the atomic lattice of solid matter. Phonons are studied in solid state physics relating to thermal and electrical properties of materials. See saser and photon.