Main Entry: ul·ti·ma·tum

Pronunciation: \ˌəl-tə-ˈmā-təm, -ˈmä-\

Function: noun

Inflected Form(s): plural ul·ti·ma·tums or ul·ti·ma·ta \-tə\

Etymology: New Latin, from Medieval Latin, neuter of ultimatus final

Date: 1731

: a final proposition, condition, or demand; especially : one whose rejection will end negotiations and cause a resort to force or other direct action