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“subaudible”
subaudible (adjective) (not comparable)
Referring to sounds scarcely perceptible to the ear or of being heard: Subaudible noises or sounds are either below the threshold of hearing or are barely hearable, like little waves splashing against the sand at a beach.
This entry is located in the following units:
audio-, aud-, audi-, audit- +
(page 7)
sub-, suc-, suf-, sug-, sum-, sup-, sur-, sus-, su-
(page 1)