'Ultima ratio' definitions:

Definition of 'Ultima ratio'

From: GCIDE
  • Ultima \Ul"ti*ma\ ([u^]l"i[i^]*m[.a]), a. [L., fem. of ultimus last.] Most remote; furthest; final; last. [1913 Webster]
  • Ultima ratio [L.], the last reason or argument; the last resort.
  • Ultima Thule. [L.] See Thule. [1913 Webster]