Triennial (adjective)

Occurring every three years.

Origin:

Late 16th century: from latin triennis, from tri- "three" + annus "year".

Examples:

1. The triennial festival was a celebration of the town's history and culture.
2. The triennial event was eagerly anticipated by the local community, who looked forward to the festivities.
3. The triennial gathering brought together people from all over the world, who shared a common interest.
4. The triennial meeting was an opportunity for experts in the field to exchange ideas and share best practices.
5. The triennial survey was conducted to assess the state of the industry and identify areas for improvement.