tr.v. pos·tu·lat·ed, pos·tu·lat·ing, pos·tu·lates

1. To assume or assert the truth, reality, or necessity of, especially as a basis of an argument: "We can see individuals, but we can't see providence; we have to postulate it" (Aldous Huxley).

2. To propose as a hypothesis or explanation: Researchers now postulate that the disease is caused by a virus.

3. To assume as a premise or axiom; take for granted.

4. Archaic To make claim for; demand.

n. (pŏs′chə-lĭt, -lāt′)

1. Something assumed without proof as being self-evident or generally accepted, especially when used as a basis for an argument: "the postulate that there is little moral difference between the superpowers" (Henry A. Kissinger).

2. A fundamental element; a basic principle.

3. Mathematics An axiom.

4. Archaic A requirement; a prerequisite.