Last Updated：2025/11/19
(countable and uncountable) Any of a range of colours having the longest wavelengths, 670 nm, of the visible spectrum; a primary additive colour for transmitted light: the colour obtained by subtracting green and blue from white light using magenta and yellow filters; the colour of blood, ripe strawberries, etc.
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IPA(Pronunciation)
Noun
countable
uncountable
Australia
informal
UK
derogatory
offensive
slang
Ireland
particle
US
colloquial
(countable
and
uncountable)
Any
of
a
range
of
colours
having
the
longest
wavelengths,
670
nm,
of
the
visible
spectrum;
a
primary
additive
colour
for
transmitted
light:
the
colour
obtained
by
subtracting
green
and
blue
from
white
light
using
magenta
and
yellow
filters;
the
colour
of
blood,
ripe
strawberries,
etc.
Japanese Meaning
赤色。可算・不可算名詞として用いられ、可視光スペクトルで最も長い波長を持つ色。白色光から緑と青を除いた際に、マゼンタや黄色フィルターによって得られる基本的な加法混色の一つ。血液や熟したイチゴの色も指す。
Sense（1）
(countable
and
uncountable)
Any
of
a
range
of
colours
having
the
longest
wavelengths,
670
nm,
of
the
visible
spectrum;
a
primary
additive
colour
for
transmitted
light:
the
colour
obtained
by
subtracting
green
and
blue
from
white
light
using
magenta
and
yellow
filters;
the
colour
of
blood,
ripe
strawberries,
etc.
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（ plural ）
