declination

When you turn down an invitation, that's a declination. Another kind of declination is when something slopes down, like the declination of a playground slide.

Look at the noun declination and you can see the verb decline, which means "to lessen," "to slope down," and "to refuse." Declination is the process of doing any of these things. In astronomy, it's also the distance between an object and the celestial equator, measured at an angle. The Latin root is declinatio, "a bending away."

Primary Meanings of declination

1.
n
a condition inferior to an earlier condition; a gradual falling off from a better state
2.
n
(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
Full Definitions of declination
1

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

Synonyms:
decline
Antonyms:
improvement, melioration
a condition superior to an earlier condition
Types:
show 4 types...
hide 4 types...
disuse, neglect
the state of something that has been unused and neglected
twilight
a condition of decline following successes
wreck
something or someone that has suffered ruin or dilapidation
omission
something that has been omitted
Type of:
condition, status
a state at a particular time

n a downward slope or bend

Synonyms:
declension, decline, declivity, descent, downslope, fall
Antonyms:
acclivity, ascent, climb, raise, rise, upgrade
an upward slope or grade (as in a road)
Types:
downhill
the downward slope of a hill
steep
a steep place (as on a hill)
Type of:
incline, side, slope
an elevated geological formation

n a polite refusal of an invitation

Synonyms:
regrets
Type of:
acknowledgement, acknowledgment
a statement acknowledging something or someone
refusal
a message refusing to accept something that is offered
2

n (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

Synonyms:
celestial latitude, dec
Type of:
angular distance
the angular separation between two objects as perceived by an observer

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