Southing

Part of speech: noun (n.)

1. Tendency or progress southward; as, the southing of the sun. Emerson.

2. The time at which the moon, or other heavenly body, passes the meridian of a place.

3. Distance of any heavenly body south of the equator; south declination; south latitude.

4. Distance southward from any point departure or of reckoning, measured on a meridian; -- opposed to northing.