a combining form meaning “more,” used in the formation of compound words: pleomorphism.
Also pleio-, plio-.

Origin of pleo-

combining form representing Greek pleíōn more (comparative of polýs;see poly-); see -o- Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for pleo-


combining form

a variant of plio- pleochroism; pleomorphism
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for pleo-



The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.