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Dobro |
trademark for a type of acoustic steel guitar that is held on the lap and fretted with a metal bar or tube. [1/2 definitions] |
interferometer |
a device used to make precise measurements of wavelengths using acoustic, optical, or microwave interference phenomena. |
perlite |
a volcanic glass with distinctive concentric cracks, used in the manufacture of concrete and plaster, and thermal and acoustic insulation. |
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