celestial equator

noun

Definition of celestial equator

: the great circle on the celestial sphere midway between the celestial poles

Recent Examples of celestial equator from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'celestial equator.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of celestial equator

1848

in the meaning defined above

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