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Picture Dictionary
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textbook
noun
A
book
that
contains
the
main
information
about
a
subject
and
is
used
for
study
in
schools
or
universities
.
•
Maria
left
her
textbook
at
home
and
had
nothing
to
study
from
during
class
.
Maria
left
her
textbook
at
home
and
had
nothing
to
study
from
during
class
.
•
The
biology
textbook
is
filled
with
colorful
diagrams
of
plants
and
animals
.
The
biology
textbook
is
filled
with
colorful
diagrams
of
plants
and
animals
.
Compound
of
the
words
“
text
”
and
“
book
,”
first
recorded
in
the
early
18th
century
to
describe
books
containing
the
primary
texts
for
study
.
