n. A member of a class of words functioning in a noun phrase to identify or distinguish a referent without describing or modifying it. Examples of determiners include articles (a, the), demonstratives (this, those), cardinal numbers (three, fifty), and indefinite numerals (most, any, each).n. A dependent function in a noun phrase marking the NP as definite or indefinite. This function is usually filled by words in the determinative class but may be filled by other elements such as a genitive pronoun.n. Something that determines, or helps someone to determine, something else.