from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A condition in which tissues of genetically different types occur in the same organism.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. the condition in which more than one genetically distinct population of cells coexist within one individual
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the condition in which an organism has two or more cell populations that differ in genetic makeup
mosaic + -ism (Wiktionary)