The Collaborative International Dictionary of English v.0.48:
Ultimate \Ul"ti*mate\, a. [LL. ultimatus last, extreme, fr. L.
ultimare to come to an end, fr. ultimus the farthest, last,
superl. from the same source as ulterior. See Ulterior, and
1. Farthest; most remote in space or time; extreme; last;
My harbor, and my ultimate repose. --Milton.
Many actions apt to procure fame are not conductive
to this our ultimate happiness. --Addison.
2. Last in a train of progression or consequences; tended
toward by all that precedes; arrived at, as the last
Those ultimate truths and those universal laws of
thought which we can not rationally contradict.
3. Incapable of further analysis; incapable of further
division or separation; constituent; elemental; as, an
ultimate particle; an ultimate constituent of matter.
Ultimate analysis (Chem.), organic analysis. See under
Ultimate belief. See under Belief.
Ultimate ratio (Math.), the limiting value of a ratio, or
that toward which a series tends, and which it does not
Syn: Final; conclusive. See Final.