1. Ayana (Sanskrit) [from the verbal root i, ay to go] Going, walking; road, path, way. Used in astronomy for advancing, precession; the sun's progress northward or southward, from one solstice to the other, is an ayana or half-year, two ayanas making one year. Also the equinoctial and solstitial points, the term for the solstice being ayananta. Finally, ayana signifies circulatory courses or circulations, as of the universe