plural decibels
technical
: a unit for measuring how loud a sound is
a rock concert blasting music at 110 decibels
suffered hearing loss from repeated exposure to high decibels [=to loud sounds]
—abbr. dB
Cite this Entry
“Decibel.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/decibel. Accessed 22 Jun. 2026.
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