Dependent possessive determiner

From Teflpedia

A dependent possessive determiner (known in traditional grammar as a possessive adjective) is a possessive determiner (i.e. a pronoun and determiner used as a possessive) that requires a dependent noun.

A possessive determiner can be transformed into possessive pronouns by the addition of possessive 's (albeit without the apostrophe) in the case of "your"/"yours", "her"/"hers", our/"ours" and "their"/"theirs". Whilst "his" remains unchanged but only really because we can't add -s to s, while "its" is generally not used as a possessive pronoun.

Of course, many writers want to include the apostrophe, hence the issue of its v. it's.