Assume something or present it as a fact and you postulate it. Physicists postulate the existence of parallel universes, which is a little mind-blowing.

Anyone who has suffered through geometry class is familiar with some of the greatest hits, like Euclid's postulate and the point-line-plane postulate. Those are propositions that have to be assumed for other mathematical statements to follow logically. As a verb (pronounced "POST-you-late") it describes the act of presenting an idea, theory, belief, or concept.

Definitions of postulate
  1. verb
    maintain or assert
    synonyms: contend
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    type of:
    assert or affirm strongly; state to be true or existing
  2. verb
    require as useful, just, or proper
    “This intervention does not postulate a patient's consent”
    synonyms: ask, call for, demand, involve, necessitate, need, require, take
    claim, exact, take
    take as an undesirable consequence of some event or state of affairs
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    eliminate, obviate, rid of
    do away with
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    claim, exact, take
    take as an undesirable consequence of some event or state of affairs
    require to be in a certain grammatical case, voice, or mood
    require a specified depth for floating
    require to lose, suffer, or sacrifice
    cry for, cry out for
    need badly or desperately
    necessitate or exact
  3. verb
    take as a given; assume as a postulate or axiom
    synonyms: posit
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    assert, insist
    assert to be true
    type of:
    presuppose, suppose
    take for granted or as a given; suppose beforehand
  4. noun
    (logic) a proposition that is accepted as true in order to provide a basis for logical reasoning
    synonyms: posit
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    Bayes' postulate
    (statistics) the difficulty of applying Bayes' theorem is that the probabilities of the different causes are seldom known, in which case it may be postulated that they are all equal (sometimes known as postulating the equidistribution of ignorance)
    assumption, premise, premiss
    a statement that is assumed to be true and from which a conclusion can be drawn
    major premise, major premiss
    the premise of a syllogism that contains the major term (which is the predicate of the conclusion)
    minor premise, minor premiss, subsumption
    the premise of a syllogism that contains the minor term (which is the subject of the conclusion)
    an unproved statement put forward as a premise in an argument
    condition, precondition, stipulation
    an assumption on which rests the validity or effect of something else
    a postulated sequence of possible events
    (rhetoric) an assumption or underlying belief that connects evidence to a claim
    type of:
    (logic) a statement that affirms or denies something and is either true or false
Word Family

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