Last Updated：2025/11/24
(pharmacology) A synthetic estrogen drug C₁₈H₂₀O₂ used formerly to prevent miscarriage or premature delivery in humans and to promote growth in livestock. The medical use of diethystilbestrol was discontinued in the U.S. during the early 1970s due to its association with serious side effects (such as reproductive tract abnormalities and increased rates of infertility) in offspring exposed to the drug while developing in the uterus. It is no longer commercially available in the U.S. and its use is currently limited to specially compounded formulations for veterinary care.
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diethylstilbestrol
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Source Word
diethylstilbestrol
IPA(Pronunciation)
Noun
countable
uncountable
(pharmacology)
A
synthetic
estrogen
drug
C₁₈H₂₀O₂
used
formerly
to
prevent
miscarriage
or
premature
delivery
in
humans
and
to
promote
growth
in
livestock.
The
medical
use
of
diethystilbestrol
was
discontinued
in
the
U.S.
during
the
early
1970s
due
to
its
association
with
serious
side
effects
(such
as
reproductive
tract
abnormalities
and
increased
rates
of
infertility)
in
offspring
exposed
to
the
drug
while
developing
in
the
uterus.
It
is
no
longer
commercially
available
in
the
U.S.
and
its
use
is
currently
limited
to
specially
compounded
formulations
for
veterinary
care.
Japanese Meaning
医薬品として使用された人工合成エストロゲン。かつては流産や早産予防および家畜の成長促進に用いられたが、副作用のリスク（生殖器異常や不妊率上昇など）のため、1970年代初頭に医療用途が中止された化学物質
Sense（1）
(pharmacology)
A
synthetic
estrogen
drug
C₁₈H₂₀O₂
used
formerly
to
prevent
miscarriage
or
premature
delivery
in
humans
and
to
promote
growth
in
livestock.
The
medical
use
of
diethystilbestrol
was
discontinued
in
the
U.S.
during
the
early
1970s
due
to
its
association
with
serious
side
effects
(such
as
reproductive
tract
abnormalities
and
increased
rates
of
infertility)
in
offspring
exposed
to
the
drug
while
developing
in
the
uterus.
It
is
no
longer
commercially
available
in
the
U.S.
and
its
use
is
currently
limited
to
specially
compounded
formulations
for
veterinary
care.
（ plural ）
（ abbreviation ）
