Definition of equatorial (noun)
- 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
Definition of equatorial (adjective)
- of or relating to or at an equator
- "equatorial diameter"
- of or relating to conditions at the geographical equator
- "equatorial heat"
- of or existing at or near the geographic equator
- "equatorial Africa"
- antonym: polar
Source: Princeton University Wordnet