D defs.my
Entry 1 sense Webster, 1913

Gravitational

/grăvˌ-ĭt-āsh'-ən-əl/ · Grav·i·tation·al · IPA /ˌɡɹævɪˈteɪʃənəl/
01 a. Of or pertaining to the force of gravity; as, gravitational units.
  1. 1.
    Of or pertaining to the force of gravity; as, gravitational units.(Physics)