† cataˈnadromous,a.Obs.Zool. [f.mod.L. catanadromi (Gesner), f.Gr. κατά down + ανά up + -δροµος running.] An epithet preferred by some early naturalists to anadromous. [1753Chambers Cycl. Supp., Anadromous..Some use the word Catanadromi in the same sense.] Hence in some mod. Dicts.