Definition of "presupposition" [pre•sup•po•si•tion]

• An assumption made beforehand; a preliminary conjecture or speculation. (noun)
• The act of presupposing. (noun)

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• "Inherent in this presupposition is the idea that progress is the privilege of Europeans 'descendants, out of which biased ideas about Africans and others are fostered and accepted as truth."
• "The second presupposition is seen in the expression “liturgy of the Church” meaning the post-conciliar forms."
• "Your presupposition is that our government needs to maintain its current level of spending, or will increase spending, which, while entirely likely, will dip again at some point, the nature of the economy being slightly cyclical."