A person who leaves one country to settle permanently in another.
A plant or animal that establishes itself in an area where it previously did not exist.
Of or relating to immigrants or the act of immigrating.
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.