English has several weighty words descended from the Latin gravitas, meaning "weight." The first to arrive on the scene was "gravity," which appeared in the early 16th century. (Originally meaning "dignity or sobriety of bearing," it quickly came to mean "weight" as well.) Next came "gravitation" (used to describe the force of gravity) and "gravitate" - both mid-17th century arrivals. "Gravitate" once meant "to apply weight or pressure," but that use is now obsolete. In the late 17th century, it was recorded in the sense "to move under the effect of gravitation." It then acquired a more general sense of "to move toward something" (as toward a specific location), and finally a metaphorical third sense of "to be attracted" (as toward a person or a vocation).