#1 declination n. [decline] a condition inferior to an earlier condition; a gradual falling off from a better state. wn
#2 declination n. [descent, declivity, fall, decline, declension, downslope] a downward slope or bend. wn
#3 declination n. [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. wn
#4 declination n. [regrets] a polite refusal of an invitation. wn
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