graduation

(noun) the successful completion of a program of study.

(noun) an academic exercise in which diplomas are conferred. Synonyms: commencement, commencement exercise, commencement ceremony, graduation exercise.

(noun) a line (as on a vessel or ruler) that marks a measurement. Examples: "The ruler had 16 graduations per inch."

(noun) the act of arranging in grades. Synonyms: gradation.