IPA: /rɪˈzɛdʒənʃəli/
KK: /rɪˈzɛdʒənʃəli/
In a manner that relates to or is suitable for residences or living areas.
The area is residentially zoned, meaning only homes can be built there.
Residentially → It is formed from "residential" (from Latin "residentialis", meaning pertaining to residence) and the suffix "-ly" (meaning in a manner of). The word "residentially" means in a manner pertaining to residences or living spaces.
Think of 'residential' relating to places where people live, and '-ly' means in a manner. So, residentially helps you remember it refers to something done in a way related to living spaces.