sonar
English Dictionary
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sonar Definition
(n)
a
measuring
instrument
that
sends
out
an
acoustic
pulse
in
water
and
measures
distances
in
terms
of
the
time
for
the
echo
of
the
pulse
to
return
;
sonar
is
an
acronym
for
sound
navigation
ranging
;
asdic
is
an
acronym
for
anti
-
submarine
detection
investigat
sonar Synonyms
asdic
echo sounder
sonar
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