Medical Definition of Epi-

  • Medical Author:
    William C. Shiel Jr., MD, FACP, FACR

    Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.

Epi-: Prefix taken from the Greek that means "on, upon, at, by, near, over, on top of, toward, against, among." As in epicanthal fold (a fold of skin that comes down across the inner angle, the canthus, of the eye; epicardium (a layer of fibrous tissue that surrounds the heart and the roots of the great blood vessels); episclera (a thin membrane on top of the sclera, the white of the eye); epidural anesthetic (an anesthetic injected into the epidural space surrounding the fluid-filled sac, called the dura, around the spine which partially numbs the abdomen and legs); etc.

Reviewed on 12/27/2018

Health Solutions From Our Sponsors