graduation
US /ˌɡrædʒ.uˈeɪ.ʃən/
UK /ˌɡrædʒ.uˈeɪ.ʃən/

1.
the successful completion of a course of study, with a diploma or degree
:
•
My graduation ceremony is next month.
•
She worked hard to achieve her graduation.
2.
the act of marking or dividing into degrees or units
:
•
The precise graduation of the thermometer ensures accurate readings.
•
The engineer checked the graduation marks on the ruler.