Alma Mater

 al·ma ma·ter

noun

1. the school, college, or university that one once attended.

   "he started teaching at his alma mater"

   

   

   

   

   

   • the anthem of a school, college, or university.

   
   
2. Alma mater (Latin: alma mater, lit. 'nourishing mother'; pl. [rarely used] almae matres) is an allegorical Latin phrase currently used to identify a school, college or university that one formerly attended or/and graduated from.
3. 
   
4. Alma mater comes from two Latin words meaning "nourishing or bountiful mother,"
5. but by the early eighteenth century in Britain it had come to refer to one's university.

What is alma mater vs alumni?

Alumnus means "foster son," "pupil," or "to nourish" in Latin. The Latin term for a former school is alma mater, meaning "nourishing mother"; therefore, an alumnus can be seen as the foster son (pupil) of the nourishing mother (the school).