pre-embryo
Noun. a fertilized human egg, up to 14 days old, that can develop into an embryo; especially one to be implanted by IVF.This is an unmodified, but possibly outdated, definition from Wiktionary and used here under the Creative Commons license. Wiktionary is a great resource. If you like it too, please donate to Wikimedia.
This entry was last updated on RefTopia from its source on 3/20/2012.