Learn how to say Gravitationally correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word gravitation:
1movement, or a tendency to move, towards a centre of gravity, as in the falling of bodies to the earth.
Physics the force responsible for gravitation; gravity.
2movement towards or attraction to something:
this recent gravitation towards the Continent
mid 17th century: from modern Latin gravitatio(n-), from the verb gravitare (see gravitate)