The Chinese word 底部 (dǐbù), meaning "the bottom" or "base", is a compound noun formed by combining two meaningful characters: 底 (dǐ), which means "bottom" or "base" itself, and 部 (bù), which means "part" or "section". This structure follows a common pattern in Chinese word formation known as a modifier-modified or descriptive compound, where the first character 底 specifies the type, and the second character 部 indicates the category. Thus, the word literally translates to "the bottom part" or "the base section", creating a precise and logical term for the lowest portion of an object.