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introduction
noun
the
first
part
of
a
book
,
essay
,
speech
,
or
similar
work
that
explains
what
it
will
be
about
•
I
always
read
the
introduction
before
starting
the
first
chapter
.
I
always
read
the
introduction
before
starting
the
first
chapter
.
•
The
professor
’
s
lecture
began
with
a
clear
introduction
to
the
topic
.
The
professor
’
s
lecture
began
with
a
clear
introduction
to
the
topic
.
Sense
developed
in
16th-century
English
to
refer
to
the
opening
section
of
a
written
work
.
noun
the
formal
act
of
making
two
or
more
people
known
to
each
other
•
“
May
I
make
an
introduction
?
This
is
my
sister
,
Emily
,”
he
said
with
a
smile
.
“
May
I
make
an
introduction
?
This
is
my
sister
,
Emily
,”
he
said
with
a
smile
.
•
After
a
brief
introduction
,
the
guests
began
to
mingle
around
the
garden
.
After
a
brief
introduction
,
the
guests
began
to
mingle
around
the
garden
.
late
Middle
English
,
from
Latin
introductio
,
from
introducere
‘
lead
in
’.
noun
the
act
of
bringing
something
into
use
or
existence
for
the
first
time
•
The
introduction
of
electric
cars
has
changed
the
automobile
industry
.
The
introduction
of
electric
cars
has
changed
the
automobile
industry
.
•
Many
jobs
were
created
after
the
introduction
of
the
new
tax
policy
.
Many
jobs
were
created
after
the
introduction
of
the
new
tax
policy
.
Industrial-era
extension
of
the
base
sense
“
to
bring
in
”,
applied
to
new
products
and
policies
.
noun
a
beginner-level
course
,
book
,
or
talk
that
teaches
the
basic
facts
about
a
subject
•
I
’
m
taking
an
Introduction
to
Philosophy
this
semester
.
I
’
m
taking
an
Introduction
to
Philosophy
this
semester
.
•
The
book
“
An
Introduction
to
Robotics
”
explains
concepts
in
simple
language
.
The
book
“
An
Introduction
to
Robotics
”
explains
concepts
in
simple
language
.
Pedagogical
sense
arose
in
the
19th
century
as
universities
expanded
subject
surveys
.
noun
a
short
opening
passage
of
music
that
comes
before
the
main
part
of
a
piece
•
The
song
’
s
piano
introduction
is
calm
before
the
drums
kick
in
.
The
song
’
s
piano
introduction
is
calm
before
the
drums
kick
in
.
•
The
orchestra
rehearsed
the
slow
introduction
several
times
.
The
orchestra
rehearsed
the
slow
introduction
several
times
.
Borrowed
into
musical
terminology
in
the
18th
century
to
describe
an
opening
segment
.