1. A festival or celebration, especially one held at a university or college to commemorate a founding or significant event.
Usage: archaic; chiefly British academic; often capitalized when referring to specific institutional ceremonies

Examples

• The university held its annual encaenias to honor the founders.
• Oxford's encaenias is a traditional ceremony dating back centuries.
• Students gathered for the encaenias festivities on campus.
• The encaenias celebration included speeches and academic processions.