Definitions of prism

optical
device
having
a
triangular
shape
and
made
of
glass
or
quartz;
used
to
deviate
a
beam
or
invert
an
image

A
solid
whose
bases
or
ends
are
any
similar,
equal,
and
parallel
plane
figures,
and
whose
sides
are
parallelograms.

A
transparent
body,
with
usually
three
rectangular
plane
faces
or
sides,
and
two
equal
and
parallel
triangular
ends
or
bases; 
used
in
experiments
on
refraction,
dispersion,
etc.

A
solid
whose
hases
are
similar,
equal,
and
parallel,
and
whose
sides
are
parallelograms;
such
a
solid,
having
triangular
ends
and
made
of
glass
or
other
transparent
substance:
used
for
separating
the
colors
in
the
light
ray.

(
geom.)
A
solid
whose
ends
are
similar,
equal,
and
parallel
planes,
and
whose
sides
are
parallelograms: (
optics)
a
solid
glass,
triangular
shaped
body.

A
solid,
the
sides
of
which
are
parallelograms,
and
the
ends
similar,
equal,
and
parallel
planes.

A
solid
whose
bases
are
similar
equal
and
parallel
plane
figures,
and
whose
faces
are
parallelograms;
spectrum.

A
solid
whose
bases
or
ends
are
similar,
equal
and
parallel
plane
figures,
and
whose
sides
are
parallelograms.

A
solid
whose
ends
or
bases
are
similar,
equal
and
parallel
planes,
and
whose
sides
are
parallelograms;
a
triangular
bar
of
glass.
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