a combining form meaning “having chromosome sets” of the kind or number specified by the initial element: hexaploid.
Origin of -ploid
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
adj combining form, n combining form
indicating a specific multiple of a single set of chromosomesdiploid
Word Origin for -ploid
from Greek -pl (oos) -fold + -oid
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
Having or being a number of chromosomes that has a specified relationship to, or is a multiple of, the basic number of chromosomes of a group:heteroploid.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.