Structureless adj. Without a definite structure, or arrangement of parts; without organization; devoid of cells; homogeneous; as, a structureless membrane.
... B, or a collection of cells united by simple structureless solid, is seen to be extensively employed in the body under the name of cartilage. Out of this the surfaces of the articulations and the springs of the breathing apparatus are formed. But when Nature came to the buffers of the spinal column (intervertebral ... — Medical Essays • Oliver Wendell Holmes, Sr.