IPA: /ˌɡrævɪˈteɪʃənəli/
KK: /ˌgrævɪˈteɪʃənəli/
In a way that relates to the force of gravity.
The planets move gravitationally around the sun due to its massive pull.
Gravitationally → It is formed from "gravity" (from Latin "gravitas", meaning heaviness) and the suffix "-al" (meaning pertaining to) combined with "-ly" (meaning in a manner). The word "gravitationally" means in a manner pertaining to gravity or heaviness.
Think of 'gravity' as the force that pulls things down, and remember that 'gravitationally' describes how something behaves in relation to that force.