1. [ noun ] (astronomy) the angular distance to a point on a celestial object measured north or south from the celestial equator; expressed in degrees; used with right ascension to specify positions on the celestial sphere
Synonyms: DEC celestial_latitude
Related terms: angular_distance astronomy
2. [ noun ] (geography) a downward slope
Synonyms: fall declivity decline downslope declension descent
Related terms: ascent slope downhill steep decline fall
3. [ noun ] a condition inferior to an earlier condition; a gradual falling off from a better state
Synonyms: decline
Related terms: improvement condition wreck neglect twilight worsen
4. [ noun ] the polite declining of an invitation
Synonyms: refusal regrets
Related terms: message acknowledgment refuse
Similar spelling:   desalination