Sentence:  It might be anticipated that a pulsating star, such as a Cepheid is believed to be, would emit <WSD>gravitational waves</WSD> abundantly; but when the question is examined analytically, this expectation is not confirmed. 
Meaning of the word marked with <WSD> tags:  A fluctuation in spacetime caused by accelerating mass, which propagates as a wave at the speed of light.