par·a·ten·ic host (păr′ə-tĕnĭk)
An organism that plays a role in a parasite's life cycle, as by harboring its unhatched eggs, but in or on which no development of the parasite occurs.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The American Heritage Dictionary Blog
Check out our blog, updated regularly, for new words and revised definitions, interesting images from the 5th edition, discussions of usage, and more.