colure
n. ஒன்றையொன்று செங்கோணமாக வான துருவங்களில் வெட்டிக் குறுக்கிடும் இரு நிரைவட்டங்களில் ஒன்று.
Co*lure", n.; pl. Colures. Etym: [F. colure, L. coluri, pl., fr. Gr. (Astron. & Geog.) Defn: One of two great circles intersecting at right angles in the poles of the equator. One of them passes through the equinoctial points, and hence is denominated the equinoctial colure; the other intersects the equator at the distance of 90º from the former, and is called the solstitial colure. Thrice the equinoctial line He circled; four times crossed the car of night From pole to pole, traversing each colure. Milton.