noun, genitive Ce·phe·i [see-fee-ahy] /ˈsi fiˌaɪ/ for 1.
Related formsCe·phe·id [see-fee-id] /ˈsi fi ɪd/, adjective
Examples from the Web for cepheid
And then for an instant, the Cepheid's bright wink was dulled; eclipsed.The Women-Stealers of Thrayx|Fox B. Holden
We will install it in the 'S Doradus' and the 'Cepheid' as a weapon.
Shapley has estimated the distances of many of these bodies, which contain a large number of variable stars of the Cepheid type.Astronomy|David Todd
Some stars pulsed, like the Cepheid variables, but in an orderly way.The Egyptian Cat Mystery|Harold Leland Goodwin
They started down the corridor, and came presently to the huge locks where the "S Doradus" and the "Cepheid" were berthed.