postulate
postulate
Latin
“Surprisingly, postulate begins as a demand, not a guess.”
Latin postulāre meant "to demand" in the 1st century BCE, used by Cicero. The verb produced postulātum, "a demand." This was a legal and rhetorical word. It carried force and expectation.
By late antiquity, Latin scholastic writing used postulatum for a required premise. The sense moved from demand to required assumption. The word kept its Latin shape in learned contexts. It named what must be granted.
French adopted the learned term as postulat in the 14th century. It was used in university and church discourse. The word remained tied to formal reasoning. It stayed close to Latin.
English took postulate in the 17th century for axioms and stated assumptions, with 1620 often cited. It entered mathematics and philosophy as a formal starting point. The verb postulate followed, meaning "to assume as a postulate." The modern meaning echoes the old demand.
Related Words
Today
A postulate is a basic statement accepted without proof, especially in mathematics or logic. It can also mean an assumption stated for argument or discussion.
In everyday use it is a starting point that frames what follows. It still carries a sense of what must be granted. "Grant it, then proceed."
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