noun
business angel; angel investor; start-up investor
A wealthy individual who provides capital for a business start-up, usually in exchange for convertible debt or ownership equity. Used in business contexts.
彼はITスタートアップに投資するビジネスエンジェルだ。
He is a business angel who invests in IT start-ups.
ビジネスエンジェルからの資金調達に成功した。
We succeeded in raising funds from a business angel.