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ultramontane
ultramontanism
ultramundane
ultranationalism
ultrashort
ultrasonic
ultrasonic testing
ultrasonic welding
ultrasonics
ultrasonogram
ultrasonography
ultrasound
ultrastructure
ultraviolet
ultraviolet astronomy
ultraviolet-visible spectroscopy
ultravirus
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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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