xeno-, xen-, -xenic, -xenism, -xenist, -xenous, -xeny

(Greek: foreign, foreigner; alien; different; extraneous; strange, stranger; and by extension, guest)

The "x" in xeno- is pronounced "z"; "zeno". Greeks are said to have considered any stranger a "guest" and modern Greek includes xenodocheion a "guest house" or "house for guests" or its modern version of "hotel".

The etymological meaning usually denotes some aspect of a relationship involving guests or visitors of some kind.

1. The surgical removal of an organ or tissue from one species and transplanting it into a member of a different species, for example: the use of a baboon heart in a human being.
2. The surgical transfer of cells, tissues, or especially whole organs from one species to another.

The rationale for xenotransplantation is the short supply of human organs for transplantation.

The first to show that nonhuman organs could be transplanted to humans and function for a significant period of time was Dr. Keith Reemtsma (1925-2000).

At Tulane University in New Orleans, Dr. Reemtsma in 1963 and 1964 gave chimpanzee kidneys to five patients in the first chimpanzee-to-human transplants. The recipients died (of infection) from eight to sixty-three days after receiving a chimpanzee kidney.

Then, in 1964, Reemtsma transplanted a kidney from a chimpanzee to a 23-year-old teacher. She lived with it for nine months until succumbing to overwhelming infection.

Xenotransplantation is synonymous with "cross-species transplantation".

1. Something strange that is seen in the imagination or in the supernatural.
2. The ability to perceive or to see strange or different things.
3. A foreign or strange mental image that is produced by the imagination.
4. Something which is not a normal sight, but is different or strange to behold.
A person attracted to that which is foreign, especially to foreign people, manners, or cultures.

Related "foreign, strange" word families: allotrio-; barbar-.