The word is a modern English compound adjective formed from three distinct linguistic layers. The first element, "wood," is a foundational Germanic word from Old English, directly denoting the material. The second, "panel," is a later acquisition from Old French, where it originally referred to a piece of cloth or a slip of parchment, evolving to mean a distinct, flat section. The final "-ed" is a native English adjectival suffix. The compound's logic is transparently descriptive: it literally means "provided with panels made of wood," a construction that perfectly captures its modern architectural and decorative sense.

Structure: wood (material) + panel (flat piece) + ed (adjective suffix) - wood: From Old English wudu, meaning "tree, grove; wood, timber." In this compound, it specifies the material. - panel: From Old French panel, meaning "piece of cloth, piece, pane." It entered English meaning a distinct, usually rectangular section or piece. Here, it functions as the core noun. - ed: A productive English suffix forming adjectives from nouns, meaning "having, provided with, characterized by."