超ちょう海かい洋よう

noun

superocean; super ocean

Geological term for a vast ocean that surrounds a supercontinent, such as Panthalassa. Used in earth science contexts.

See also: パンサラッサ

• パンゲア大たい陸りくは超ちょう海かい洋ようパンサラッサに囲かこまれていた。

  The supercontinent Pangaea was surrounded by the superocean Panthalassa.