The meaning of NOISE is sound; especially : one that lacks an agreeable quality or is noticeably unpleasant or loud. How to use noise in a sentence. NOISE definition: 1.

Understanding the Context

a sound or sounds, especially when it is unwanted, unpleasant, or loud: 2. any bad change in a…. Learn more. NOISE definition: sound, especially of a loud, harsh, or confused kind.

Key Insights

See examples of noise used in a sentence. Sound waves are vibrations of air molecules carried from a noise source to the ear. Sound is typically described in terms of the loudness (amplitude) and the pitch (frequency) of the wave. Loudness (also called sound pressure level, or SPL) is measured in logarithmic units called decibels (dB). Define noise.

Final Thoughts

noise synonyms, noise pronunciation, noise translation, English dictionary definition of noise. n. 1. a. Sound or a sound that is loud, unpleasant, unexpected, or undesired. b.

Sound or a sound of any kind: The only noise was the wind in the pines. A noise is a sound that someone or something makes. Gerald made a small noise in his throat. ...birdsong and other animal noises.