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phonocardiogram
phonocardiograph
phonochemistry
phonogram
phonograph
phonography
phonolite
phonology
phonon
phonoscope
phonotactics
phonotypy
phony
phony war
phooey
phorate
-phore
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phonon
pho·non [ fṓ nòn ] (plural pho·nons)


noun 
Definition:
 
quantum of vibrational energy: a quantum of vibrational or acoustic energy in a crystal lattice
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