skeletal muscle morphology trait skeletal muscle fiber morphology trait ATOL:0000448 Any measurable or observable characteristic related to the shape, structure, color, or pattern of the skeletal muscle fibers, the large multinucleated cells that make up the striated muscles connected at either or both extremities with the bony framework of the body. Trait.ontology VT:0003084 skeletal muscle cell morphology trait muscle cell morphology trait