IPA: /ˌɪntərˈlaɪbrəri/
KK: /ˌɪntərˈlaɪbrəri/
Relating to or taking place between two or more libraries, often used in the context of sharing resources or services.
The university offers an interlibrary loan service for students to access books from other libraries.
Interlibrary → It is formed from "inter-" (meaning between) and "library" (from Latin "liber" meaning book, and Greek "bibliotheke" meaning a collection of books). The word refers to something that exists or occurs between libraries, such as borrowing materials from one library to another.
Think of 'inter-' meaning 'between' and 'library' referring to a collection of books — this helps you remember that 'interlibrary' relates to activities that happen between libraries.
No commonly confused words.