simple past tense and past participle of decline

Downward movement, fall. / A sloping downward, e.g. of a hill or road. / A weakening. / A reduction or diminution of activity. / The act of declining or refusing something.

(intransitive) To move downwards, to fall, to drop. / (intransitive) To become weaker or worse. / (transitive) To bend downward; to bring down; to depress; to cause to bend, or fall.

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

present participle and gerund of decline

decline

plural of decline

Third-person singular simple present indicative form of decline

plural of declination

Bent downward or aside. / (botany) Bending downward in a curve; declined.