[ prahy-mawr-dee-uhm ]
/ 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.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
Example sentences from the Web for primordium
No wonder that at a time of such turbulence fine society also should have shown the primordia of a great change.The Works of Max Beerbohm|Max Beerbohm
It does not therefore follow, because these primordia semina rerum are not discoverable, that therefore they may not exist.An Introduction to Entomology: Vol. III (of 4)|William Kirby
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
Medical 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.