'Helispherical line' definitions:

Definition of 'Helispherical line'

From: GCIDE
  • Helispheric \Hel`i*spher"ic\, Helispherical \Hel`i*spher"ic*al\, a. [Helix + spheric, spherical.] Spiral. [1913 Webster]
  • Helispherical line (Math.). the rhomb line in navigation. [R.] [1913 Webster]