Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun An organ or a part in its most rudimentary form or stage of development.
from The Century Dictionary.
- noun Beginning; commencement; origin.
- noun In botany, the ultimate beginning of any structure.
- noun In embryology, the first trace of a future organ.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun anatomy An
aggregation ofcells that is the first stage in thedevelopment of anorgan
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun an organ in its earliest stage of development; the foundation for subsequent development
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
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Examples
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A mass of cells form a structure called the primordium and these divide extensively as new plant organs and tissues are formed.
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A mass of cells form a structure called the primordium and these divide extensively as new plant organs and tissues are formed.
Archive 2008-06-01 CC 2008
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At this point -- one not merely theoretical, or speculatively possible only, but absolutely fixed and determinable in our backward survey of the vital forces of nature -- we find individual parentage lost in a natural matrix, or in the vital principle implanted as a "primordium," in the earth itself.
Life: Its True Genesis R. W. Wright
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The whole controversy, as at present conducted by the materialists and vitalists, resolves itself into this one question: -- Whether life springs from what Dr. Harvey calls a "primordium," -- a pre-existing vital germ or unit -- or whether it originates _de novo_, as the materialists assert, from infusions contained in their experimental flasks, or from plastide particles contained in protoplasmic matter, or from the still more daring hypothesis of "molecular machinery" as worked by molecular force?
Life: Its True Genesis R. W. Wright
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From this primordium came the Progenitors, the First Races of ReasonâDragon and Giant and Goblin and Shay.
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This changes, perhaps, the rate of growth of the embryonic primordium of the jaw.
THE GREATEST SHOW ON EARTH RICHARD DAWKINS 2009
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This changes, perhaps, the rate of growth of the embryonic primordium of the jaw.
THE GREATEST SHOW ON EARTH RICHARD DAWKINS 2009
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July 28th, 2006 at 12: 56 pm primordium. org » Blog Archive » Bush Agenda: Meet American Idol Finalists, Vacation says:
Think Progress » As Mideast Crisis Grows, Bush Invites ‘American Idol’ To The White House 2006
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September 27th, 2005 at 4: 56 pm primordium. org » Blog Archive » Who Is the Majority Now? says:
Think Progress » Protest Turnout: A Picture’s Worth a Thousand Lies 2005
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October 6th, 2005 at 5: 15 pm primordium. org » Blog Archive » But, look at all my tokens! says:
Kristianto2010 commented on the word primordium
Small primordia (initial fruiting bodies) will be formed at the beginning of the reproductive phase. Under the right conditions, these primordia will develop into fruiting bodies. Primordial is plural of Primordium; the earliest stage of an organ.
January 25, 2011