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say it: ee-kwuh-TAW-ree-uhl
equatorial is an adjective and noun meaning "of or relating to or at an equator". It carries 4 recorded senses.
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”
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
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for equatorial come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.