type of variable star, 1904, from Delta Cephi, the name of the first such star identified, which is in the dim northern constellation Cephus, named for Greek Kepheus, a mythical king. With -id.
雙語例句
1. Cepheid variable stars are stars whose brightness changes at regular periods.
造父變星是一種光線按規(guī)律周期發(fā)生變化的恒星.
來自互聯(lián)網(wǎng)
2. His first great discovery was made when he recognized a Cepheid variable star.