Read Edit View history 天底 tiāndǐ nadir Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 天底 tiāndǐ nadir In astronomy, the point on the celestial sphere directly below an observer and opposite the zenith Edit Delete 天底 tiāndǐ sky The bottom of the sky; the sky Edit Delete References Add reference antonym 天底/天底 → 天顶/天頂 Edit Delete
天底 tiāndǐ nadir In astronomy, the point on the celestial sphere directly below an observer and opposite the zenith Edit Delete