IPA: /ˌɛkstrəˈlɪtərɛri/
KK: /ɛkstrəˈlɪtərɛri/
Referring to things that are not part of literature or literary studies.
The conference discussed various extraliterary influences on modern storytelling.
Extraliterary is formed from "extra-" (meaning outside) and "literary" (from Latin "literarius", meaning related to letters or literature). The word refers to things that are outside the realm of literature or not related to literary works.
Think of 'extra-' meaning 'outside' and 'literary' relating to 'letters' or 'literature' — this helps you remember that 'extraliterary' refers to things outside of literature.