IPA: /əˈdʒɔɪnɪŋ/
KK: /əˈdʒɔɪnɪŋ/
Describing something that is next to or connected with something else, often sharing a boundary or edge.
The adjoining rooms made it easy for the family to spend time together.
Adjoining is formed from "ad-" (meaning to or towards) and "join" (from Latin "jungere", meaning to join or connect) and the suffix "-ing" (indicating the action or process). The word describes the action of being connected or joined to something else.
Think of 'joining' something 'to' ('ad-') — that's why adjoining means being connected or next to something.