元となった辞書の項目
primordial sea
noun
The
oceans
of
the
earth
at
a
time
early
in
its
history.
The
term
generally
implies
either
the
time
before
or
during
the
development
of
multi-cellular
life
forms
(i.e.,
during
the
Precambrian),
or
alternatively
before
the
development
of
the
first
land-based
life
forms
(i.e.
during
the
early
Paleozoic).
意味（1）
The
oceans
of
the
earth
at
a
time
early
in
its
history.
The
term
generally
implies
either
the
time
before
or
during
the
development
of
multi-cellular
life
forms
(i.e.,
during
the
Precambrian),
or
alternatively
before
the
development
of
the
first
land-based
life
forms
(i.e.
during
the
early
Paleozoic).
