n. 1. The gradual lowering of pitch during an utterance; simultaneous lowering of baseline and topline, often accompanied by a reduction in’pitch span. Cf. downdrift, downstep. 2. A similar gradual reduction in loudness during an...

Variously: 1   The angle between the true north and the magnetic north; 2   The angle between the elevation of a star or other celestial body and the celestial equator; 3   A downwards...

The difference between true north as shown on a topographic map and magnetic north as indicated by the magnetic needle on a...

In astronomy, declination (abbrev. dec or δ) is one of the two coordinates of the equatorial coordinate system, the other being either right ascension or hour angle. Dec is comparable to latitude, projected onto the celestial sphere, and is measured in...