grand; far-reaching; ambitious
Describes plans, visions, or goals that are large-scale and long-term. Often used in formal or written language.
彼は遠大な計画を立てた。
He made a grand plan.
The project is based on a far-reaching concept.
Compound of 遠 (far) and 大 (big, great), literally 'far and great'. The meaning 'far-reaching, grand' is a straightforward extension of the kanji meanings.