declination

noun

1. 1

   a polite refusal of an invitation

2. 2

   (astronomy) the angular distance of a celestial body north or to the south of the celestial equator; expressed in degrees; used with right ascension to specify positions on the celestial sphere

3. 3

   a downward slope or bend

4. 4

   a condition inferior to an earlier condition; a gradual falling off from a better state