* Definition: A definition provides a precise and unambiguous explanation of a term. It sets the term apart from all other terms by explaining its specific meaning and characteristics.
Let's look at why the other options are not the correct answer:
* Postulate: A postulate is a statement accepted as true without proof. It's a fundamental starting point for a logical system, but it doesn't define a term.
* Proof: A proof demonstrates the truth of a statement using logical reasoning. It's not about defining a term, but rather proving its validity.
* Theorem: A theorem is a statement that has been proven to be true. While theorems may use definitions, they don't define terms themselves.
In summary: A definition is the only statement specifically designed to distinguish a term from all other terms by providing its unique meaning.