உத்தராயனம், the sun's course in the northern constellations of the zodiac x தக்ஷணாயனம், the sun's course in the south.
அயனமண்டலம், the ecliptic; equinoctial course.
s. A road, path, வழி. 2. Course, especially the half yearly course of the sun, வருடப்பாதி. 3. Equinoctial or solstitial points. Wils. p. 64. AYANA.அயனகாலம், s. The interval be tween the equinoxes, அயனங்களினிடைநி கழ்காலம். Wils. p. 64. AYANAKALA. 2. The time of the commencement of the tropical year, months, or either of the two; this is commonly called அயன ப்பிறப்பு.அயனசலனம், s. Amount of the precession of the equinoxes at any given time.அயனமண்டலம், s. Colures, equi noctial colure.அயனமாதம், s. The month reck oned from the true equinox.அயனவாண்டு, s. The year reck oned from the true equinox.உத்தராயணம், s. The course of the sun from south to north, north de clination. Wils. p. 142. UTTARAYANA.தட்சணாயனம்--தக்ஷிணாயனம், s. The course from north to south. Wils. p. 395. DAKSHINAYANA.
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