IPA: /ˈmʌltiˌtʃænəl/
KK: /mʌltiˈtʃænəl/
Relating to or involving several different methods or platforms for communication or distribution.
The company adopted a multichannel approach to reach more customers through various platforms.
Multichannel → It is formed from "multi-" (meaning many) and "channel" (from Old French *canal*, meaning a conduit or passage). The word "multichannel" refers to having many conduits or pathways for communication or distribution.
Think of 'many' ('multi-') pathways or 'channels' for communication — that's what multichannel means.
No commonly confused words.