IPA: //ˈmʌl.ti.peɪnd//
KK: /mʌltiˌpeɪnd/
Having several panes of glass, typically in a window or door.
The old house had beautiful multipaned windows that let in plenty of light.
Multipaned → It is formed from "multi-" (meaning many) and "paned" (derived from "pane", which comes from Old French *pan*, meaning a flat piece or section). The word "multipaned" describes something that has many panes or sections, typically referring to windows or glass.
Think of 'many' ('multi-') pieces or sections ('paned') — that's why multipaned means having many panes.
No commonly confused words.