底
dǐ · HSK 4
bottom
⬇️ 广 (shelter) + 氐 (low) — the low part under a shelter, i.e. the bottom
底 combines 广 (a roof/shelter radical) with 氐 (dǐ, meaning low or base). The 氐 component also carries the sound. Together they mark the lowest part of something — its underside, base, or end.
底 — 广 (shelter radical) + 氐 (phonetic 'dǐ')
底 is a semantic-phonetic compound. The 广 radical depicts a roofed structure or shelter, suggesting the bottom or base of a building. The component 氐 supplies the sound 'dǐ' and originally meant 'low' or 'base,' reinforcing the meaning. Together they convey 'bottom,' 'foundation,' or 'underneath.'