colatitude
/koʊˈlætɪtud/
noun
- The complement of the latitude; the difference between 90 degrees and the latitude, measured from the North Pole (0°) to the South Pole (180°).
- The colatitude of a point at 40°N is 50°.
- In spherical astronomy, the colatitude is often used instead of latitude.
- To find the colatitude, simply subtract the latitude from 90 degrees.