determiner
/dɪˈtɜː.mɪ.nə(ɹ)/noun
University
1
A factor that defines something, or one among several that define it.
2
Someone or something (especially a sentient agent) that determines; a decider of a disposition.
3
A member of a class of words functioning in a noun phrase to identify or distinguish a referent without describing or modifying it.
4
A dependent function in a noun phrase that marks it 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.