1.Tendency or progress southward; as, the southing of the sun.
2.The time at which the moon, or other heavenly body, passes the meridian of a place.
3.(Astron.) Distance of any heavenly body south of the equator; south declination; south latitude.
4.(Surv. & Navigation) Distance southward from any point departure or of reckoning, measured on a meridian; opposed to northing.
