from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The product of conception at any point between fertilization and birth. It includes the embryo or the fetus as well as the extraembryonic membranes.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The fetus or embryo, including all the surrounding tissues protecting and nourishing it during pregnancy.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. an animal organism in the early stages of growth and differentiation that in higher forms merge into fetal stages but in lower forms terminate in commencement of larval life


Latin, something conceived; see concept.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin cōncipō ("to take hold of, to receive"), from Latin capiō ("to capture") (Wiktionary)



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