Also found in: Thesaurus, Medical, Financial, Encyclopedia.
Related to ectogenous: hemiapraxia
2. Able to live and develop outside a host, as certain pathogenic microorganisms do.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.