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countdown
noun
a
backward
count
to
zero
that
marks
the
final
moments
before
an
event
or
action
begins
•
The
countdown
to
the
rocket
launch
filled
everyone
with
excitement
.
The
countdown
to
the
rocket
launch
filled
everyone
with
excitement
.
•
Our
teacher
started
a
countdown
from
ten
before
we
opened
our
eyes
.
Our
teacher
started
a
countdown
from
ten
before
we
opened
our
eyes
.
formed
in
the
1950s
by
compounding
count
+
down
,
popularized
by
space-launch
procedures
countdown
countdown
