What is Declination?

Legal Definition
In astronomy, declination (abbreviated dec; symbol δ) is one of the two angles that locate a point on the celestial sphere in the equatorial coordinate system, the other being hour angle. Declination's angle is measured north or south of the celestial equator, along the hour circle passing through the point in question.

The root of the word declination (Latin, declinatio) means "a bending away" or "a bending down". It comes from the same root as the words incline ("bend toward") and recline ("bend backward").
-- Wikipedia
Legal Definition
In Scotch law. A plea to the jurisdiction, on the ground that the judge ls interested in the suit.
-- Black's Law Dictionary
Legal Definition
-- Ballentine's Law Dictionary