IPA: /ˌɪntəˈrɛɪʃəli/
KK: /ˌɪntəˈreɪʃəli/
In a way that involves or relates to different races.
The community celebrated their diversity by hosting events that brought people together interracially.
Interracially → It is formed from "inter-" (meaning between) and "racial" (from "race", which has roots in the Latin "ratio", meaning kind or type) and the suffix "-ly" (meaning in a manner). The word describes something that occurs between different races or kinds.
Think of 'between' ('inter-') different 'kinds' ('racial') — that's why interracially refers to interactions or relationships between different races.