1. Farthest; most remote in space or time; extreme; last; final. 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 result; final. Those ultimate truths and those universal laws of thought which we can not rationally contradict. (Coleridge)
Synonym: Final, conclusive. See Final.
Origin: 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 cf. Ultimatum.