nadir

英 ['neɪdɪə; 'nædɪə] 美['nedɪr]

• n. 最低点，最底点；[天] 天底
• n. (Nadir)人名；(土、葡、巴基、阿拉伯)纳迪尔

1. an extreme state of adversity; the lowest point of anything

2. the point below the observer that is directly opposite the zenith on the imaginary sphere against which celestial bodies appear to be projected