English
gravitational
From gravitation + -al.
A compound of gravitation + -al
Proto-Indo-European *gʷreh₂- ‘heavy’
…
Proto-Italic *gʷraus ‘heavy’
Latin gravis ‘heavy’
Latin gravitō ‘to gravitate, to fall under the influence of…’
New Latin gravitātiō
English gravitation
Today it means
adj Pertaining to, or caused by, gravity or gravitation.
Language periods are conventional ranges, not dates for this word.
Etymograph / gravitational