n. The transplantation of biological or organic matter from a given species into a different one, especially when this matter has been altered (such as by genetic engineering)
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a surgical procedure in which tissue or whole organs are transfered from one species to another species
Word Usage
"They have kept pig lungs functioning with human blood, paving the way for animal-human transplants - called xenotransplantation - in as little as five years."