A Quick and Simple Dictionary

postulate

1. Noun.  Something assumed without proof as being self-evident or generally accepted, especially when used as a basis for an argument.
2. Noun.  A fundamental element; a basic principle.
3. Noun.  (logic) An axiom.
4. Noun.  A requirement; a prerequisite.
5. Verb.  To assume as a truthful or accurate premise or axiom, especially as a basis of an argument.
6. Verb.  (ambitransitive) (Christianity, historical) To appoint or request one's appointment to an ecclesiastical office.
7. Verb.  (ambitransitive) (obsolete) To request, demand or claim for oneself.