n. A reducing in rank; the act of depriving one of a degree of honor, of dignity, or of rank; deposition, removal, or dismissal from rank or office: as, the degradation of a general.n. The state of being reduced from a higher to a lower grade of power, character, or estimation; degeneracy; debasement.n. The act of sinking to a lower level in space.n. Diminution or reduction, as of strength, value, altitude, or magnitude.n. In painting, a lessening and obscuring of distant objects in a landscape, to give the effect of distance.n. In geology, the reduction or wearing down of higher lands, rocks, strata, etc., by the action of water or other causes.n. In biology, abortive structural development; retrograde metamorphosis, such as that witnessed in many parasites as a result of their parasitism.n. In botany, a change consisting of abstraction, loss, abortion, or non-development of usual organs.n. In heraldry, same as abatement.n. In organic chemistry, the resolution of the molecule of a compound into other substances of smaller molecular weight.