com·mence·ment 
(kə-mĕnsmənt)
(kə-mĕnsmənt)n.
1. A beginning; a start.
2.
a. A ceremony at which academic degrees or diplomas are conferred.
b. The day on which such a ceremony occurs.
- trial and error
- trial-and-error
- trial balance
- trial balloon
- trial by fire
- trial jury
- trialogue
- trial run
- triamcinolone
- triamterene
- triangle
- triangular
- triangularity
- triangularly
- triangulate
- triangulation
- triangulator
- Triangulum
- Triangulum Australe
- triarchy
- Triassic
- triathlete
- triathlon
- triatomic
- triatomine bug