An alumnus is a graduate of a school. You can be an alumnus of a high school, college or university.

Want to be an alumnus? Then you'd better study hard and graduate: an alumnus has received a diploma or degree from a school. You've probably heard of some famous or successful alumni (the plural of alumnus from your own school: schools tend to be proud of students who have gone on to do well. Schools also like to ask each alumnus (famous or not) to give back to the school — usually monetarily.

Definitions of alumnus
  1. noun
    a person who has received a degree from a school (high school or college or university)
    synonyms: alum, alumna, grad, graduate
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    Ivy Leaguer
    a student or graduate at an Ivy League school
    old boy
    a former male pupil of a school
    type of:
    bookman, scholar, scholarly person, student
    a learned person (especially in the humanities); someone who by long study has gained mastery in one or more disciplines
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