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boom
noun
a
deep
,
loud
,
sudden
sound
,
like
an
explosion
,
thunder
,
or
a
big
drum
•
A
sudden
boom
echoed
across
the
valley
when
the
cannon
fired
.
A
sudden
boom
echoed
across
the
valley
when
the
cannon
fired
.
•
We
heard
the
distant
boom
of
thunder
before
the
storm
arrived
.
We
heard
the
distant
boom
of
thunder
before
the
storm
arrived
.
Imitative
origin
:
the
word
copies
the
deep
,
resonant
noise
it
describes
.
verb
-
boom
,
booming
,
booms
,
boomed
to
make
a
deep
,
loud
,
and
resonant
sound
•
The
big
bass
drum
boomed
throughout
the
stadium
.
The
big
bass
drum
boomed
throughout
the
stadium
.
•
Thunder
boomed
overhead
as
the
rain
began
to
fall
.
Thunder
boomed
overhead
as
the
rain
began
to
fall
.
From
the
noun
“
boom
,”
copying
the
deep
sound
.
interjection
an
exclamation
used
to
imitate
a
loud
explosive
sound
or
to
announce
something
dramatic
•
"
Boom
!"
shouted
the
magician
as
the
flowers
appeared
.
"
Boom
!"
shouted
the
magician
as
the
flowers
appeared
.
•
The
announcer
yelled
"
Boom
!"
when
the
team
scored
a
last-second
goal
.
The
announcer
yelled
"
Boom
!"
when
the
team
scored
a
last-second
goal
.
Onomatopoeic
origin
,
copying
the
sound
of
an
explosion
or
big
impact
.
noun
a
period
of
fast
economic
growth
or
sudden
increase
in
popularity
•
The
tech
industry
experienced
a
huge
boom
in
the
early
2000s
.
The
tech
industry
experienced
a
huge
boom
in
the
early
2000s
.
•
There
was
a
baby
boom
after
the
war
ended
.
There
was
a
baby
boom
after
the
war
ended
.
From
earlier
sense
of
loud
noise
;
later
applied
metaphorically
to
sudden
expansion
(
19th
c
.).
verb
-
boom
,
booming
,
booms
,
boomed
to
grow
or
develop
very
quickly
and
successfully
•
Online
shopping
has
boomed
in
the
last
decade
.
Online
shopping
has
boomed
in
the
last
decade
.
•
The
city
’
s
population
boomed
after
the
new
factory
opened
.
The
city
’
s
population
boomed
after
the
new
factory
opened
.
Extended
from
the
noun
meaning
“
rapid
increase
” (
19th
c
.).
noun
a
long
pole
used
to
hold
a
microphone
or
camera
,
or
the
horizontal
spar
that
extends
the
bottom
of
a
sail
on
a
boat
•
The
sound
engineer
adjusted
the
microphone
on
the
boom
to
capture
the
actor
’
s
voice
.
The
sound
engineer
adjusted
the
microphone
on
the
boom
to
capture
the
actor
’
s
voice
.
•
The
cameraman
swung
the
boom
arm
smoothly
for
the
overhead
shot
.
The
cameraman
swung
the
boom
arm
smoothly
for
the
overhead
shot
.
From
Dutch
“
boom
”
meaning
“
tree
”
or
“
pole
,”
introduced
into
English
nautical
language
in
the
16th
c
.;
later
borrowed
in
film
technology
for
the
pole
holding
a
microphone
.
