Etymology of the Latin word appetitus
the Latin word appetitus (appetite, desire; esp. natural)
derived from the Latin word appetere (seek, grasp after, desire)
derived from the Classical Latin word petere (to seek; attack; aim at; desire)
derived from the Proto-Indo-European root *pet-
using the Latin prefix ad- (to, in addition)
derived from the Latin word ad (to; near; to; to; to; near)
using the New Latin prefix a-