Ultima /(ŭl"iĭ*mȧ)/

Ul·ti·ma

Ultima

a.
  1. Most remote; furthest; final; last.

Phrases & Compounds
Ultima ratio
the last reason or argument; the last resort.
Ultima Thule
See Thule.

Ultima

n.
  1. The last syllable of a word. (Gram. & Pros.)