Either of two great circles intersecting at right angles at the celestial poles and passing through the ecliptic at either the equinoxes or the solstices.
More example sentences
- Two great circles, the solstitial colure and the equinoctial colure, intersect at the celestial poles.
- The four crossbars, or rungs of the ladder, are the four colures, which come together at the pole.
- The relative precision of the constellations, the path of the Milky Way, and information on the parallels and colures is therefore even more remarkable.
late Middle English: from late Latin coluri (plural), from Greek kolourai (grammai) 'truncated (lines)', from kolouros 'truncated', so named because the lower part is permanently cut off from view.
Definition of colure in:
- The US English dictionary