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.

noun. The quantum of acoustic or vibrational energy (sound), considered a discrete particle rather than a wave.

"In crystals this source is a phonon, which is a bundle of energy resulting from vibrations in the crystal's lattice and which has a large momentum."

photon  plasmon  

5ghz  baseband  collisional  dipolar  doxhv