One of the mysteries of the English language finally explained.
The angular distance of a point north or south of the celestial equator.
- ‘Consistently, equinoctial markers and alignments were made to an declination well over half a degree to the north.’
- ‘Also every month, the Moon will reach its minimum declination at 18 north or south.’
- ‘He also determined the latitude and longitude of many stars, and measured the greatest declination of the planet Mercury.’
- ‘To calculate the distance we need to know the declination of the sun on a given day.’
- ‘It's easy enough to gauge an asteroid's longitude and latitude (ascension and declination in astro-speak), but figuring out its current celestial position is tricky.’
- 1.1 The angular deviation of a compass needle from true north (because the magnetic north pole and the geographic north pole do not coincide).
turning aside, turning away, turning, diversion, drawing awayView synonyms
- ‘The compass needle and a knowledge of magnetic declination, the angle between the magnetic north and geographic north, were developments from this knowledge; they were described by Shen Kua in 1088.’
- ‘He also studied magnetic declination and was the first to observe the secular variation.’
- ‘Gellibrand's most famous scientific discovery was the change over the years in magnetic declination.’
- ‘Proposals were being made to solve the longitude problem and in 1673 one based on magnetic declination was proposed by a certain Henry Bond.’
- ‘On the North Rim the difference between map and compass is 15 east, a distinction known as magnetic declination.’
2US Formal refusal.‘in the face of this declination of the proposition’
refusal, withholding, withdrawalView synonyms
- ‘The actual declination letter disappeared from the file.’
Late Middle English: from Latin declinatio(n-), from the verb declinare (see decline).
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