Of letters, figures, words, parts of speech, etc.: expressing or denoting a number or numbers.

Grammar. Denoting a linguistic element (esp. a noun, pronoun, or adjective) used to indicate that only part of a collective whole is referred to…

Grammar. Of a noun, adjective, etc.: indicating the country, locality, etc., with which a person or thing is affiliated. Also of a suffix, etc…

Not definitive; not characterized by definition or limitation; indeterminate, indefinite.

Of words: Introducing or stating an inference; esp. in illative particle.

Grammar. Applied by Wilkins to a word or part of speech denoting a complete notion; see B. 3. Obsolete.

Grammar. Expressing an inference. (Cf. B. 2) Obsolete.

Grammar. Of or relating to the mood of a verb. Of a verb or other element: expressing or used to express modality. Esp. in modal auxiliary, modal verb…

That relates to an indefinite amount or a subset of the whole.