Chapter U to Ultra- of U by Webster's Dictionary (1913 Edition)

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.

3. Incapable of further analysis; incapable of further division or separation; constituent; elemental; as, an ultimate constituent of matter.

Ultimate analysis (Chem.), organic analysis. See under Organic. — 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 pass.

Syn. — Final; conclusive. See Final.

Ultimate
(Ul"ti*mate) v. t. & i. [imp. & p. p. Ultimated ; p. pr. & vb. n. Ultimating.]

1. To come or bring to an end; to eventuate; to end. [R.]

2. To come or bring into use or practice. [R.]

Ultimately
(Ul"ti*mate*ly) adv. As a final consequence; at last; in the end; as, afflictions often tend to correct immoral habits, and ultimately prove blessings.

Ultimation
(Ul`ti*ma"tion) n. State of being ultimate; that which is ultimate, or final; ultimatum. [R.] Swift.

Ultimatum
(Ul`ti*ma"tum) n.; pl. E. Ultimatums L. Ultimata [NL. See Ultimate.] A final proposition, concession, or condition; especially, the final propositions, conditions, or terms, offered by either of the parties in a diplomatic negotiation; the most favorable terms a negotiator can offer, the rejection of which usually puts an end to the hesitation.

Ultime
(Ul"time) a. Ultimate; final. [Obs.] Bacon.

Ultimity
(Ul*tim"i*ty) n. [LL. ultimatus extremity, fr. L. ultimus the last.] The last stage or consequence; finality. [Obs.] Bacon.

Ultimo
(||Ul"ti*mo). [L. ultimo (mense) in the last month.] In the month immediately preceding the present; as, on the 1st ultimo; — usually abbreviated to ult. Cf. Proximo.

Ultion
(Ul"tion) n. [L. ultio.] The act of taking vengeance; revenge. [Obs.] Sir T. Browne.

Ultra-
(Ul"tra-) a. A prefix from the Latin ultra beyond having in composition the signification beyond, on the other side, chiefly when joined with words expressing relations of place; as, ultramarine, ultramontane, ultramundane, ultratropical, etc. In other relations it has the sense of excessively, exceedingly, beyond what is common, natural, right, or proper; as, ultraconservative; ultrademocratic, ultradespotic, ultraliberal, ultraradical, etc.