史し上じょう初はつ

noun which may take the genitive case particle 'no', noun

first in history; unprecedented

Used to describe something that has never happened before in recorded history. Often modifies nouns with の.

• これは史し上じょう初はつの有ゆう人じん火か星せい着ちゃく陸りくだ。

  This is the first manned landing on Mars in history.

• 史し上じょう初はつの快かい挙きょを成なし遂とげた。

  They achieved an unprecedented feat.