Definitions
1.NounThe action or process of graduating and receiving a diploma for completing a course of study (such as from an educational institution)."The graduation ball was the students' chance to say goodbye to each other.; After my graduation, I took a year out to travel, then went into an office job."
2.NounA commencement ceremony.
3.NounThe action or process of leaving a group."graduation from AKB48"
4.NounA marking (e.g., on a container) indicating a measurement on a scale, usually one of many such markings; the making of such marks.
5.NounThe exposure of a liquid in large surfaces to the air, so as to hasten its evaporation.
6.NounSynonym of gradation.