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English Fox - English Dictionary
Meaning of
allantoic sac
in English
allantoic sac
#uncommon
Definitions
Noun
a
fluid-filled
cavity
in
the
placenta
of
some
mammals
,
including
humans
,
that
serves
as
a
reservoir
for
waste
products
and
provides
a
source
of
water
and
nutrients
for
the
developing
embryo
in
some
reptiles
and
birds
,
a
similar
structure
that
functions
as
a
temporary
storage
organ
for
excess
water
and
waste
products
Base Words
allantoic
sac
