ˌəltəˈmā]d.əm, ]təm also -mä] or -mȧ] noun
( plural ultimatums -mz ; or ultima·ta ]d.ə, ]tə)
Etymology: New Latin, from Medieval Latin, neuter of ultimatus final — more at ultimate
1. : a final proposition, condition, or demand ; especially : one whose rejection will end negotiations and cause a resort to force or other direct action
2. : the farthest point or stage to be reached : a final objective or end : ultimate