Nadir
Jump to navigation
Jump to search
The nadir is the point on Earth directly beneath a satellite, the opposite of zenith. Compare with subsatellite point.[1]
Etymology: Middle English, from Middle French, from Arabic naḍhīr opposite Date: 15th century.[2]
References
- ↑ NASA Earth Observatory glossary
- ↑ Nadir Merriam-Webster Online Dictionary