1. The act of bending down; a declining or falling into a worse state; decay; deterioration; gradual appeasement or calming down; oblique motion; deviation from rectitude; refusal; declension; the distance north or south of any object from the celestial equator Declination of the compass or needle, the variation of the needle from the true meridian of a place. The declination of a wall or plane, an arch of the horizon, contained between the plane and the prime vertical circle, if reckoned from the east or west, or between the meridian and the plane, if reckoned from the north or south.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• deliniation,
• declration,
• decluration,
• decliration,
• declairation,
• decliniation,
• delination,
• declation,
• declnation,
• declatation,
• ecplination,
• decination,
• declimation,
• declinsation,
• decilnation,
• decclination,
• decussation,
• depliation,
• declinatore,
• declinatroy

• declension,
• declinometer,
• desalinate,
• desalination,
• desalinization,
• declamatory,
• declining,
• desalinisation,
• declaration,
• declamation.

The adverb form of the word "declination" is "declinational".

The adjective form of the word "declination" is "declinational".

The plural of the "declination" can be the "declinations".

The singular of the "declination" can be the "declination".