pioneering; trailblazing; path-breaking
Describes something that is ahead of its time or leads the way in a field. Often used for research, ideas, or efforts.
彼の先駆的な研究がこの分野の基礎を築いた。
His pioneering research laid the foundation for this field.
この会社は先駆的な技術で知られている。
This company is known for its trailblazing technology.
先駆的 stresses being ahead of others as a pioneer, whereas 画期的 highlights the novelty and impact of the achievement itself.
Compound of 先駆 (せんく, 'forerunner') + 的 (てき, '-like, -ic'). The exact historical derivation is uncertain, but the spelling is conventionally associated with the meaning.