Meaning of “equator” - Learner’s Dictionary

equator

noun [ U ] uk us /ɪˈkweɪtər/

the imaginary line around the Earth that divides it into equal north and south parts

equatorial uk us /ˌekwəˈtɔːriəl/ adjective

relating to the equator

(Definition of “equator” from the Cambridge Learner’s Dictionary © Cambridge University Press)