General meaning: resume previous tempo  

Italian

a tempo

resuming the preceding rate of speed after a slowing or speeding up

come prima

resuming the the previous tempo; as before

rimettendo

resuming a previous tempo after slowing down or accelerating

ripigliando

resuming, usually tempo

riprendendo

resuming, usually tempo

tempo I

resuming the the opening tempo

tornando a primo tempo

resuming the original tempo; as before

German

Hauptzeitmass

original tempo