: a quantum of vibrational energy (as in a crystal)
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In a solid wire, phonons move freely like open highway traffic.—
Mrigakshi Dixit,
Interesting Engineering,
23 June 2026 In ordinary metals, phonons are frequently disrupted by collisions with one another and with electrons, reducing their ability to dissipate heat.—
Rachel Nuwer,
Scientific American,
11 Apr. 2026 Their conductivity is limited by the strong interactions between free-moving electrons and atomic vibrations called phonons.—
Abhimanyu Ghoshal,
New Atlas,
27 Jan. 2026 See All Example Sentences for phonon
Word History
Etymology
borrowed from Russian fonon, from Greek phōnḗ "sound made by something living, voice" + Russian -on-on entry 2 — more at phono-