n. The act or state of sticking or adhering: rare in a physical sense, adhesion being commonly used. Figuratively, the character of being fixed in attachment; fidelity; steady attachment: as, an adherence to a party or opinions; the act of holding to closely: as, a rigid adherence to rules.n. In Scots law, the return of a husband or wife who has for a time deserted his or her spouse.n. In painting, the effect of those parts of a picture which, wanting relief, are not detached, and hence appear adhering to the canvas or surface. Fairholt. In logic and metaphysics, the state of being adherent. See adherent, a., 3.n. In the theory of aggregates, the aggregate of all those points of a point-aggregate which are not limiting points (that is, limits of endless series of points): called the adherence of the point-aggregate; the aggregate of all the remaining points is called its coherence.