Ultimatum
Pronunciation : Ul`ti*ma"tum, n.; pl. E. Ultimatums
Part of Speech : L.
Etymology : [NL. See Ultimate.]
Definition : Defn: 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.
Ultimata.
Source : Webster's Unabridged Dictionary, 1913