'Sideral' definitions:

Definition of 'Sideral'

From: GCIDE
  • Sideral \Sid"er*al\, a. [L. sideralis. See Sidereal.]
  • 1. Relating to the stars. [1913 Webster]
  • 2. (Astrol.) Affecting unfavorably by the supposed influence of the stars; baleful. "Sideral blast." --Milton. [1913 Webster]