year-long

Adjective

alt-of alternative not-comparable

Alternative spelling of yearlong.

Japanese Meaning

一年間続く / 一年間の

The year-long research project yielded unexpected breakthroughs in renewable energy.

1年間の研究プロジェクトは再生可能エネルギー分野で予期せぬ突破口をもたらした。

Sense（1）

Alternative spelling of yearlong.

Life-long marriage-contracts: how much preferable were year-long or month-long—to the nomad or ape!