元となった辞書の項目
Dras
name
意味（1）
意味（5）
(geology,
historical)
Ellipsis
of
Dras
Volcanic
Island
Arc.
A
former
archipelago
in
the
Neotethys;
south
of
in
Eurasia
(c.
150
Mya-50Mya).
A
former
island
chain
that
accreted
onto
the
northern
edge
of
the
Indian
Subcontinent
when
it
crashed
into
the
southern
shore
of
Eurasia
(Mega-Laurasia),
forming
part
of
the
mountains
separating
the
Tibetan
Plateau
from
South
Asia
