IPA: /ˌriː.əˈsɛl.ə.reɪ.tɪd/
KK: /riːˈæk.sə.ləˌreɪ.tɪd/
Having increased speed or rate again after a previous acceleration.
The reaccelerated train reached its destination much faster than expected.
Reaccelerated → It is formed from "re-" (meaning again) and "accelerare" (from Latin, meaning to hasten or speed up). The word means to speed up again or to increase speed once more.
Think of 'again' ('re-') and 'speeding up' ('accelerare') — that's why reaccelerated means to speed up again.