Achromatic
Definition of Achromatic
Ach`ro`mat´ic
a.
1.
(Opt.)
Free
from
color
;
transmitting
light
without
decomposing
it
into
its
primary
colors
.
2.
(Biol.)
Uncolored
;
not
absorbing
color
from
a
fluid
; -
said
of
tissue
.
Achromatic lens
(Opt.)
a
lens
composed
usually
of
two
separate
lenses
,
a
convex
and
concave
,
of
substances
having
different
refractive
and
dispersive
powers
,
as
crown
and
flint
glass
,
with
the
curvatures
so
adjusted
that
the
chromatic
aberration
produced
by
the
one
is
corrected
by
other
,
and
light
emerges
from
the
compound
lens
undecomposed
.
Achromatic prism
See
Prism
.
Achromatic telescope
one
in
which
the
chromatic
aberration
is
corrected
,
usually
by
means
of
a
compound
or
achromatic
object
glass
,
and
which
gives
images
free
from
extraneous
color
.
Related Words
light
,
light-colored
,
value
,
white
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