ultrasonic
English Thesaurus
1. having frequencies above those of audible sound (adj.all)
| similar | : | inaudible, unhearable, |
| definition | : | impossible to hear; imperceptible by the ear (adj.all) |
| derivation | : | ultrasound, |
| definition | : | very high frequency sound; used in ultrasonography (noun.phenomenon) |
| derivation | : | ultrasound, |
| definition | : | very high frequency sound; used in ultrasonography (noun.phenomenon) |
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