IPA: /ˌmʌltiˈsɛn.sər.i/
KK: /mʌltiˈsɛnʊri/
Related to or involving multiple senses at the same time, such as sight, sound, touch, taste, and smell.
The museum offers a multisensory experience that engages visitors through sight, sound, and touch.
Multisensory is formed from "multi-" (meaning many) and "sensory" (from Latin "sensus", meaning sense). The word describes something that involves or engages many senses at once.
Think of 'many' ('multi-') senses being engaged together, which is what multisensory means.