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n. pl. prot·a·ses (-sēz′)
1. Grammar The dependent clause of a conditional sentence, as if it rains in The game will be canceled if it rains.
2. The first part of an ancient Greek or Roman drama, in which the characters and subject are introduced.

[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·tat′ic (prŏ-tăt′ĭk, prō-) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


n, pl -ses (-siːz)
1. (Logic) logic grammar the antecedent of a conditional statement, such as if it rains in if it rains the game will be cancelled. Compare apodosis
2. (Theatre) (in classical drama) the introductory part of a play
[C17: via Latin from Greek: a proposal, from pro- before + teinein to extend]
protatic adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈprɒt ə sɪs)

n., pl. -ses (-ˌsiz)
1. the clause expressing the condition in a conditional sentence, in English usu. beginning with if. Compare apodosis.
2. the first part of an ancient drama, in which the characters are introduced.
[1610–20; < Late Latin < Greek prótasis proposition, protasis =prota- s., in n. derivation, of proteínein to stretch out, offer, propose (pro- pro-2 + teínein to stretch) + -sis -sis]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.


Classical Drama, the first part of a play, when the characters are introduced. Cf. epitasis. See also grammar; wisdom. — protatic, adj.
See also: Drama
Rare. a proposition or maxim. See also drama; grammar.
See also: Wisdom
a clause containing the condition in a conditional sentence. Cf. apodosis. See also drama; wisdom and foolishness. — protatic, adj.
See also: Grammar
-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
(RS 18.06-17.365: 11'-15') The injunctions nerta lipusunissu and lihalliqusu in the apodosis echo both forms of violence expressed in the protasis, nerta eppas and ana hulluqi.
(113) My reason for retaining "premise" over "proposition" is that I believe our translation should allow us to understand protasis here as both a demonstrative premise and a dialectical premise ([phrase omitted]).
Asi las cosas, podemos interpretar la protasis <<cuando justas causas dificultan hacer un proceso judicial>> en dos perspectivas.
Accordingly, whilst the concept of the 'chief-part' stands clear in the protasis and in the final statement, the apodosis conveys the means by which the relationship of subordination works.
Even when no character is concerned, even without a protasis, the counterfactual constitutes the means of disclosure: "On the evening under consideration, it would have been noticed that, though the gloom had increased sufficiently to confuse the minor features of the heath, the white surface of the road remained almost as clear as ever" (RN 12).
In a decade when the children's troupes were still the preferred entertainers at court, performing relatively longer plays exhibiting classical Terentian structure (e.g., protasis, epitasis, catastrophe, and even in plays like Campaspe and Sappho and Phao, sometimes printed in five acts) as well as engaged in the conversion of indoor spaces for the use of performing plays, a habit of conflating the two traditions, or assuming simply one, has rendered us unable to distinguish emerging practices from those that were lingering, particularly when examining the relationship between players and printed drama.