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ultrasound
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ultra-
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sound
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The
Simple English Wikipedia
has an article on:
Ultrasound
Word parts
change
Noun
change
Singular
ultrasound
Plural
ultrasounds
(
physics
)
Ultrasound
is the
sound
with a
frequency
greater than the upper
limit
of
human
hearing
.
(
medicine
)
Ultrasound
is the use of
ultrasonic
waves
for
diagnostic
or
therapeutic
purposes
.