ingresar
enter
ingress
the action of entering
+
-ar
verb suffix
Ingresar means to enter and can be thought of as ingress0 (the action of entering0) + -ar1 (verb suffix1).
verb
  1. enter
    To enter or be admitted to a place, institution, or group.
    Ella ingresó a la universidad el año pasado. // She entered the university last year.