IPA: /ˌɪntəˈlækəstrɪn/
KK: /ˌɪntərləˈkʌstrɪn/
Located or occurring in the area between lakes.
The interlacustrine region is known for its unique biodiversity.
Interlacustrine → It is formed from "inter-" (meaning between) and "lacus" (meaning lake) and the suffix "-ine" (indicating relating to). The word describes something that is situated between lakes.
Think of something that is 'between' ('inter-') 'lakes' ('lacus') — that's what interlacustrine means.