protasis definition by Webster's New World
- Drama the opening of a play, in which the characters are introduced
- Gram. the clause that expresses the condition in a conditional sentence
Origin: Late Latin ; from Classical Greek ; from proteinein, to stretch before, present ; from pro-, before plush teinein, to stretch: see thin
protasis definition by American Heritage Dictionary
noun pl. prot·a·ses
- Grammar The dependent clause of a conditional sentence, as if it rains in The game will be canceled if it rains.
- The first part of an ancient Greek or Roman drama, in which the characters and subject are introduced.
Origin: Late Latin, proposition, first part of a play, from Greek, premise of a syllogism, conditional clause, from proteinein, prota-, to propose : pro-, forward; see pro-2 + teinein, to stretch; see ten- in Indo-European roots.
- pro·tatˈic adjective