n. (Math.) In the quaternion analysis, a quantity that has magnitude, but not direction; -- distinguished from a vector, which has both magnitude and direction. [ 1913 Webster ]
‖n. [ L., flight of steps. ] (Zool.) Any one of numerous species of marine gastropods of the genus
a. [ L. scalare, scalaria, staircase, ladder + -form: cf. F. scalariforme. ]
a. [ L. scalaris, fr. scalae, pl. scala, staircase, ladder. ] Resembling a ladder; formed with steps. [ Obs. ] Sir T. Browne. [ 1913 Webster ]