Celestin \ce-les-tin, cel(e)-stin\ as a girl's name is a variant of Celeste (Latin), and the meaning of Celestin is "heavenly".
The baby name Celestin sounds like Celestine and Celestina. Other similar baby names are Selestine, Selestina, Celestyne, Celestyna, Celestinea, Celestijna, Celestiel, Celestene, Celestena, Celesta and Celest.