IPA: /əˈpɒzɪʃənl/
KK: /əˈpɒzɪʃənl/
This word describes something that is related to the grammatical construction where two elements are placed side by side, with one element serving to define or modify the other.
In the phrase 'my brother, the doctor', 'the doctor' is in appositional relation to 'my brother'.
Appositional → It is formed from "ad-" (meaning to) and "positio" (from "ponere", meaning to place). The word describes a grammatical construction where a noun is placed next to another noun to explain or identify it further.
Think of placing something 'next to' ('ad-') to clarify or explain it — that's what appositional means.