noun \ˈprä-tə-səs\
plural prot·a·ses\-ˌsēz\

Definition of PROTASIS

:  the introductory part of a play or narrative poem
:  the subordinate clause of a conditional sentence — compare apodosis
pro·tat·ic \prä-ˈta-tik, prō-\ adjective

Origin of PROTASIS

Late Latin, from Greek, premise of a syllogism, conditional clause, from proteinein to stretch out before, put forward, from pro- + teinein to stretch — more at thin
First Known Use: circa 1568


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