What does postulator mean?
A postulator is someone who advances a proposition, theory, or principle for consideration or proof. The word is especially associated with formal reasoning in philosophy, mathematics, and law, where a postulate may be proposed as something that must be accepted as the basis of an argument or as a necessary consequence of other propositions. In ordinary discussion, “proposer” or “theorist” will usually sound more natural. The distinction between the person and the proposition matters: a postulator presents the claim, while a postulate is the claim itself. The term can also carry a slightly critical implication when an arguable assumption is presented as though it were self-evident. It is consequently useful in discussions of foundational assumptions, logical systems, and the status of disputed propositions.
nounA person who postulates a proposition, theory, or principle, especially as the basis for further reasoning. The term is formal and is used chiefly in philosophy, logic, law, and mathematics.
- A person who advances or formally proposes a proposition, theory, or principle for acceptance or demonstration.
"The postulator argued that the proposed principle followed necessarily from the evidence."
"Each postulator was invited to defend the assumptions underlying the model."
"The court treated the statement as an argument from the postulator rather than an established fact."
The regular plural is formed by adding -s.
"Several postulators offered competing explanations of the evidence."
A postulator puts a bold proposition on the table and invites others to test whether it must be true.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does postulator come from?
“Postulator” comes from the Latin noun postulator, meaning “one who demands” or “one who requests,” and ultimately from postulare, “to demand” or “to request.” In English, the word developed in formal scholarly contexts, especially in logic, mathematics, and law, for a person who puts forward a postulate. Its modern sense reflects the older idea of formally presenting or asserting something whose acceptance is being requested.
How postulator is actually used
This is a formal and relatively uncommon noun, found especially in philosophical, mathematical, and legal writing. It denotes the person who advances a postulate, rather than the proposition itself.
Easily confused with postulator
A postulator proposes a proposition for consideration or proof, whereas a postulant formally requests admission or appointment.