scalarian,a.andn.|skəˈlɛərɪən| [f.mod.L. Scālāria, f.scāla ladder, scale n.3] a.adj. Belonging to the genus Scalaria of gasteropods. b.n. A gasteropod of this genus. 1841Penny Cycl. XX. 501/2 The Scalarians of Lamarck consist of the genera Vermetus, Scalaria, and Delphinula.