"declination" in the noun sense
1. decline, declination
a condition inferior to an earlier condition a gradual falling off from a better state
2. descent, declivity, fall, decline, declination, declension, downslope
a downward slope or bend
3. declination, celestial latitude, dec
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
4. declination, regrets
a polite refusal of an invitation
Source: WordNet® (An amazing lexical database of English)
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