Verb

(postulat)

To assume as a truthful or accurate premise or axiom, especially as a basis of an argument.

* 1883 , , Prop. XXII,

But this pleasure or pain is postulated to come to us accompanied by the idea of an external cause;

* 1911 , Encyclopædia Britannica , "",

[T]he attempt to arrive at a physical explanation of existence led the Ionian thinkers to postulate various primal elements or simply the infinite ?? ???????.

(ambitransitive, Christianity, historical) To appoint or request one's appointment to an ecclesiastical office.

* 1874 , John Small (ed.), The Poetical Works of Gavin Douglas, Bishop of Dunkeld , Vol 1, p. xvi

[A]lthough Douglas was postulated to it [the Abbacy of Arbroath], and signed letters and papers under this designation his nomination was never completed.

(ambitransitive, obsolete) To request, demand or claim for oneself.

Verb

To form a mental image of something; to envision or create something in one's mind.

* Shakespeare

In the night, imagining some fear, / How easy is a bush supposed a bear!

* {{quote-magazine, date=2013-06-14, author=(Jonathan Freedland)

, volume=189, issue=1, page=18, magazine=(The Guardian Weekly) , title= Obama's once hip brand is now tainted , passage=Now we are liberal with our innermost secrets, spraying them into the public ether with a generosity our forebears could not have imagined . Where we once sent love letters in a sealed envelope, or stuck photographs of our children in a family album, now such private material is despatched to servers and clouds operated by people we don't know and will never meet.}}

To believe in something created by one's own mind.

To assume.

To conjecture or guess.

To use one's imagination.

(obsolete) To contrive in purpose; to scheme; to devise.

* Bible, Psalms lxii. 3

How long will ye imagine mischief against a man?