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supersonic (adj.)
1919, "of or having to do with sound waves beyond the limit of human hearing," from super- + sonic. Attested from 1934 in sense of "exceeding the speed of sound" (especially as a measure of aircraft speed), leaving the original sense to ultrasonic (1923).
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Definitions of supersonic
Dictionary entries near supersonic
superscript
superscription
supersede
supersedeas
supersession
supersonic
superstar
superstition
superstitious
superstore
superstructure