what is the plural of alumnus

The plural of "alumnus" depends on the gender of the graduates being referred to. Traditionally, "alumnus" refers specifically to a singular male graduate, and "alumni" is the plural form for a group of male graduates and for a group of male and female graduates. "Alumna" is the term for a singular female graduate, and "alumnae" refers to a group of female-only graduates. "Alum" is the gender-neutral term for a single graduate, and "alums" is the gender-neutral term for a group of graduates.