Entries linking to gravitation
1640s, "exert weight; move downward" (obsolete), from Modern Latin gravitare (16c. in scientific writing), from Latin gravitas "heaviness, weight," from gravis "heavy" (from PIE root *gwere- (1) "heavy"). Meaning "be affected by gravity" is from 1690s. Figurative sense "be strongly attracted to, have a natural tendency toward" is from 1670s. Related: Gravitated; gravitating. The classical Latin verb was gravare "to make heavy, burden, oppress, aggravate."
c. 1500, "weight, dignity, seriousness, solemnity of deportment or character, importance," from Old French gravité "seriousness, thoughtfulness" (13c.) and directly from Latin gravitatem (nominative gravitas) "weight, heaviness, pressure," from gravis "heavy" (from PIE root *gwere- (1) "heavy"). The scientific sense of "downward acceleration of terrestrial bodies due to gravitation of the Earth" first recorded 1620s.
The words gravity and gravitation have been more or less confounded; but the most careful writers use gravitation for the attracting force, and gravity for the terrestrial phenomenon of weight or downward acceleration which has for its two components the gravitation and the centrifugal force. [Century Dictionary, 1902]
the gravitation between two bodies is proportional to the product of their masses and inversely proportional to the square of the distance between them
irrigation by gravitation rather than by pumps
the gravitation of the middle class to the suburbs