Definition of fact noun in oxford advanced learners dictionary. Its important to distinguish between fact and fiction. Your fears have no basis in fact. A fact is a piece of information that is based on reality or truth and can be proven with concrete evidence. Something known to exist or to have happened. Something that actually exists: [2] for example, this sentence contains words. ā¦ The meaning of fact is something that has actual existence. A truth known by actual experience or observation; See examples of fact used in a sentence. It is an objective statement that is not influenced by personal feelings or interpretations. Meanings, translations, synonyms, pronunciations, examples, and grammar ā¦ A fact is something proven to be true. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. See āmeaning & useā for definitions, usage, and quotation evidence. Discover everything about the word fact in english: Something that is known to have happened or to exist, especially something for which proofā¦. Generally speaking, facts are independent of belief, knowledge and opinion. You cant argue with facts: Facts are different from inferences, theories, values, and objects. That which actually exists or is the case; There are 19 meanings listed in oeds entry for the word fact, four of which are labelled obsolete. Facts are pieces of information which can be proved to be true. How to use fact in a sentence. Reality or truth.