gravitically

From gravitic (“of or pertaining to gravity”) +‎ -ally.

gravitically (not comparable)

1. Using gravity.
   • 1982, Isaac Asimov, Foundation's Edge, London,  […]: Grafton Books, →ISBN, page 283:

     This time, we'll be moving gravitically - straight up - as soon as we can be assured the atmosphere above is clear of other ships.

• Jesse Sheidlower, editor (2001–2025), “gravitically, adv.”, in Historical Dictionary of Science Fiction.