[ prahy-mawr-dee-uh m ]
/ praɪˈmɔr di əm /
noun, plural pri·mor·di·a [prahy-mawr-dee-uh] /praɪˈmɔr di ə/. Embryology.
the first recognizable, histologically differentiated stage in the development of an organ.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for primordium
According to the author, anlage may be variously rendered as rudiment, inception or primordium.
British Dictionary definitions for primordium
/ (praɪˈmɔːdɪəm) /
noun plural -dia (-dɪə)
biology an organ or part in the earliest stage of development
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
Medicine definitions for primordium
[ prī-môr′dē-əm ]
n. pl. pri•mor•di•a (-dē-ə)
An aggregation of cells in the embryo indicating the first trace of an organ or structure.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.