Definitions for "Gravitational wave"
propagating field predicted by general relativity to occur as a result of any large-scale change in the distribution of matter (as in the collapse of a star).
a ripple in the curvature of space-time In other words, it is a propagating gravitational field, or propagating pattern of strain, traveling at the speed of light
A gravitational disturbance that travels through space like a wave. This type of wave is analogous to an Electromagnetic Wave. Gravitational waves are given off by most movements of anything with mass. Usually, however, they are quite difficult to detect. Physicists are currently working hard to directly detect gravitational waves. Experiments like LIGO and LISA are designed for this purpose.
an example of a change in the potential field with no corresponding change in gravitational force