Of or pertaining to epithelium; as, epithelial cells; epithelial cancer.

Relating to or consisting of epithelium.

Pert. to or formed of.

Epithelium.

The epithelial structures may be divided, as to their functions, into two main divisions. – A Practical Physiology by Albert F. Blaisdell

Nor can any difference be discerned between the bioplasm matter of the lowest, simplest, epithelial scale of man's organism and that from which the nerve cells of his brain are to be evolved. – Natural Law in the Spiritual World by Henry Drummond

The mucous membrane lining the pharynx is smooth, like that of the mouth, being covered with a layer of flat epithelial cells. – Physiology and Hygiene for Secondary Schools by Francis M. Walters, A.M.

7. Layer of epithelial cells. – Physiology and Hygiene for Secondary Schools by Francis M. Walters, A.M.

The cell growth in question is effected in the ovaries; the final stage of the process, the rupture of the containing cell or ovisac, and escape of the ovule, is attended by a concentration of nervous activity in the ganglionic masses sending nerves to those organs- analogous to that which occurs in the solar plexus at periods of digestion; the fall of the ovule is itself analogous to the shedding of epithelial cells in the gastric follicles; the afflux of blood to the utero- ovarian veins, analogous to the periodical congestion of the gastro- splenic vascular apparatus. – The Education of American Girls by Anna Callender Brackett

Such a simple tissue is called an epithelium or surface- limiting tissue, and the cells are known as epithelial cells. – A Practical Physiology by Albert F. Blaisdell