noun
regularly scheduled game; regular match
Refers to a sports match or competition that is held on a regular, predetermined schedule, often between the same teams or schools.
来週の土曜日に、隣の高校との定期戦がある。
Next Saturday, we have a regularly scheduled match against the neighboring high school.
このリーグでは、毎年秋に定期戦が組まれている。
In this league, a regular match is scheduled every autumn.
Refers to a regular tournament or convention, often larger in scale than a single match.
Compound of 定期 (regular, fixed period) and 戦 (match, battle).