declination

/ˌdɛklɪˈneɪʃən/noun
High School
1

At a given point, the angle between magnetic north and true north.

2

At a given point, the angle between the line connecting this point with the geographical center of the earth and the equatorial plane.

3

A refusal.

4

The gradual decline in the overall fundamental frequency or pitch of speech over the course of an utterance, independent of local variations such as tones and pitch accents.

5

Declension.

6

The act or state of bending downward; inclination.

7

The act or state of falling off or declining from excellence or perfection; deterioration; decay; decline.

8

Deviation.

#archaic#obsolete