ultimatum ultimatum: n. (pl. ultimatums or ultimata) a final demand or statement of terms by one party, the rejection of which by another could cause a breakdown in relations, war, or an end of cooperation etc. [L neut. past part.: see ULTIMATE]
uhlan uhlan: n. hist. a cavalryman armed with a lance in some European armies, esp. the former German army. [F & G f. Pol. (h)ulan f. Turk. oglan youth, servant]
