Colure meaning

kōlyo͝or, kəlyo͝or; kōlyo͝or
Either of two great circles of the celestial sphere intersecting each other at right angles at the celestial poles: one passes through the solstices (solstitial colure), the other through the equinoxes (equinoctial colure)
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(astronomy) Either of two great circles (meridians) that intersect at the poles and either the equinoxes or solstices.
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