n. The measure of the second principal diameter of a surface or solid, the first being length, and the third (in the case of a solid) thickness.n. Hence Figuratively, largeness; freedom from narrowness or restraint; liberality: as, breadth of culture, breadth of view, etc.n. That quality in a work of art, whether pictorial or plastic, which is obtained by the simple, clear rendering of essential forms, and the strict subordination of details to general effect.n. In logic, extension; an aggregate of subjects of which a logical term can be predicated.n. Something that has breadth; specifically, a piece of a fabric of the regular width; a width.