Read the dictionary definition of equatorial. All definitions for this word.
1. a telescope whose mounting has only two axes of motion, one parallel to the Earth's axis and the other one at right angles to it
2. of or existing at or near the geographic equator
1. equatorial Africa
3. of or relating to conditions at the geographical equator
1. equatorial heat
4. of or relating to or at an equator
1. equatorial diameter