Fibers meaning : A single elongated piece of a given material, roughly round in cross-section, often twisted with other fibers to form thread. A material in the form of fibers. A material whose length is at least 1000 times its width. Dietary fiber. Moral strength and resolve. The preimage of a given point in the range of a map. Said to be of a morphism over a global element: The pullback of the said morphism along the said global element. A kind of lightweight thread of execution.