Last Updated：2025/11/20
(chemistry) Any polyunsaturated fatty acid having a double bond between the third and fourth carbon atoms from the end of the molecule farthest from the carboxylic acid; they are found in green vegetables and in the oils of fish such as salmon and mackerel; they are essential fatty acids, and seem to be beneficial in reducing the risk of heart disease.
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omega-3 fatty acid
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Source Word
omega-3 fatty acid
Noun
(chemistry)
Any
polyunsaturated
fatty
acid
having
a
double
bond
between
the
third
and
fourth
carbon
atoms
from
the
end
of
the
molecule
farthest
from
the
carboxylic
acid;
they
are
found
in
green
vegetables
and
in
the
oils
of
fish
such
as
salmon
and
mackerel;
they
are
essential
fatty
acids,
and
seem
to
be
beneficial
in
reducing
the
risk
of
heart
disease.
Japanese Meaning
オメガ3脂肪酸とは、生体必須脂肪酸の一種であり、分子の末端（カルボキシル基から最も遠い端）から3番目と4番目の炭素原子間に二重結合を持つ多価不飽和脂肪酸です。緑黄色野菜や、サーモン、鯖などの魚油に含まれており、心疾患のリスクを低減する効果が期待されています。
Sense（1）
(chemistry)
Any
polyunsaturated
fatty
acid
having
a
double
bond
between
the
third
and
fourth
carbon
atoms
from
the
end
of
the
molecule
farthest
from
the
carboxylic
acid;
they
are
found
in
green
vegetables
and
in
the
oils
of
fish
such
as
salmon
and
mackerel;
they
are
essential
fatty
acids,
and
seem
to
be
beneficial
in
reducing
the
risk
of
heart
disease.
（ plural ）
