primordium
pri·mor·dium
noun
1.
an organ in its earliest stage of development; the foundation for subsequent development
Origin
Borrowed from Latin prīmōrdium.
Related words
Broader terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.