Definition of Xen- (prefix)

Xen- (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 to 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 at Loma Linda University, California.
  • Xenotropic virus -- A virus that can grow in the cells of a species foreign to the normal host species.

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


Last Editorial Review: 6/14/2012

Search MedTerms:


Back to MedTerms online medical dictionary A-Z List
Pill Identifier Tool

Need help identifying pills and medications?
Use the pill finder tool on RxList.