Hum
Emergence definition
Humming emerges from sustained vibration in the body's vocal cords, which is a result of vibration, a motion that requires matter, and sound, a wave that requires matter.
Wiktionary senses
Historical origin
Prerequisite chain
Neighborhood
Prerequisites
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Humming produces a sustained vibration in the body's vocal cords
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A hum is a continuous low droning sound made with closed lips