- a combining form meaning “chorion,” “choroid,” used in the formation of compound words: chorioallantois.
Origin of chorio-
combining form representing Greek chórion
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- Choroid coat:chorioretinitis.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.