noun
possibility of participation; able to participate
Used to indicate whether someone can join an event, meeting, or activity. Often appears in formal or written contexts such as invitations, schedules, and eligibility statements.
参加可能な人数を確認してください。
Please check the number of people who can participate.
このイベントは誰でも参加可能です。
Anyone can participate in this event.
Compound of 参加 (participation) and 可能 (possible). The exact historical derivation is uncertain, but the meaning is transparent from its components.