/ul'teuh may"teuhm, -mah"-/ , n. , pl. ultimatums, ultimata /-teuh/ .
1. a final, uncompromising demand or set of terms issued by a party to a dispute, the rejection of which may lead to a severance of relations or to the use of force.
2. a final proposal or statement of conditions.
[ 1725-35; ultimatus. See ULTIMATE ]