(engineering) The greatest tensile engineering stress a material can withstand before it fractures.

A radical Bolshevik policy demanding that an ultimatum be sent to Bolshevik deputies of the duma, instructing them to be uncompromisingly radical.

plural of ultimatist

A proponent of ultimatism.

plural of ultimateness

simple past tense and past participle of ultimate

present participle of ultimate

(fandom slang) The fictional universe of Ultimate Marvel.

plural of ultimatum game

(economics) An experiment, concerning the sharing of wealth, that is designed to show the absence of rationality in economic thinking