|a scrap or morsel of food left at a meal.|
|the offspring of a zebra and a donkey.|
|xenotransplantation (zěn'ə-trāns'plān-tā'shən, zē'nə-) Pronunciation Key
The surgical transfer of cells, tissues, or especially whole organs from one species to another.
Note: With the shortage of human organs available for transplant, some work has been done to use pig and nonhuman primate tissues and organs instead. Some critics charge that this could lead to new, dangerous forms of disease if a pathogen that now only affects animals becomes communicable among humans.