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ultrabasic
ultracentrifuge
ultrafiche
ultrafilter
ultrafiltrate
ultrafiltration
ultrahigh frequency
ultraism
ultralarge crude carrier
ultralight
ultramafic
ultramarine
ultramicrometer
ultramicroscope
ultramicroscopic
ultramodern
ultramontane
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ultrasonics
ul·tra·son·ics [ ùltrə sónniks ]


noun 
Definition:
 
science of high-frequency sound: the study of sound waves that have frequencies above the upper limit of the normal range of human hearing, which is about 20 kilohertz ( takes a singular verb )

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