Medical Definition of Xeno- (prefix)

  • 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.

Reviewed on 12/27/2018

Xeno- (prefix): Foreign or other. As in:

  • Xenoantigen -- An antigen that is found in more than one species.
  • Xenograft -- A surgical graft of tissue from one species an unlike species, genus or family.
  • Xenotransplantation -- Transplantation from one species to a foreign one, e.g., the heart transplant from a baboon to Baby Fae in 1984 in Loma Linda, California.
  • Xenotropic virus -- A virus that can grow in the cells of a species foreign to the normal host species.

The origin of "xeno-" is from the Late Latin, from Greek, from "xenos" meaning stranger, guest, or host. Xeno- and xen- are variant forms of the same prefix.

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Reviewed on 12/27/2018