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embryo

[em-bree-oh] /ˈɛm briˌoʊ/
noun, plural embryos.
1.
the young of a viviparous animal, especially of a mammal, in the early stages of development within the womb, in humans up to the end of the second month.
Compare fetus.
2.
Botany. the rudimentary plant usually contained in the seed.
3.
any multicellular animal in a developmental stage preceding birth or hatching.
4.
the beginning or rudimentary stage of anything:
He charged that the party policy was socialism in embryo.
adjective
5.
Origin
1580-1590
1580-90; < Medieval Latin embryon-, embryo < Greek émbryon, noun use of neuter of émbryos ingrowing, equivalent to em- em-2 + bry- (stem of brýein to swell) + -os adj. suffix
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for embryos
  • And the embryos that float in the future is blending.
  • embryos expand themselves, and giant forms contract into the size of nuts.
  • embryos are destroyed when embryonic stem cells are obtained from them.
  • By the start of the new millennium, scientists could explain the complex convolutions of embryos in stunning molecular detail.
  • The next sonogram reveals three embryos have implanted.
  • She pointed out that natural foods that are safe for adults commonly turn out to be unsafe for embryos.
  • More recently researchers have produced smart mice by inserting extra copies of a memory-related gene into mouse embryos.
  • The embryos that result from cloning-for-biomedical-research are human beings.
  • Some researchers are exploring whether such treatments could be done without destroying embryos.
  • The gene in question belongs to a retrovirus and the embryos in question belong to sheep.
British Dictionary definitions for embryos

embryo

/ˈɛmbrɪˌəʊ/
noun (pl) -bryos
1.
an animal in the early stages of development following cleavage of the zygote and ending at birth or hatching
2.
the human product of conception up to approximately the end of the second month of pregnancy Compare fetus
3.
a plant in the early stages of development: in higher plants, the plumule, cotyledons, and radicle within the seed
4.
an undeveloped or rudimentary state (esp in the phrase in embryo)
5.
something in an early stage of development: an embryo of an idea
Derived Forms
embryoid, adjective
Word Origin
C16: from Late Latin, from Greek embruon, from bruein to swell
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
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Word Origin and History for embryos

embryo

n.

mid-14c., from Medieval Latin embryo, from Greek embryon "a young one," in Homer, "young animal," later, "fruit of the womb," literally "that which grows," from en "in" (see en- (2)) + bryein "to swell, be full."

Online Etymology Dictionary, © 2010 Douglas Harper
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embryos in Medicine

embryo em·bry·o (ěm'brē-ō')
n. pl. em·bry·os

  1. An organism in its early stages of development, especially before it has reached a distinctively recognizable form.

  2. An organism at any time before full development, birth, or hatching.

  3. The fertilized egg of a vertebrate animal following cleavage.

  4. In humans, the prefetal product of conception from implantation through the eighth week of development.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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embryos in Science
embryo
  (ěm'brē-ō')   
  1. An animal in its earliest stage of development, before all the major body structures are represented. In humans, the embryonic stage lasts through the first eight weeks of pregnancy. In humans, other placental mammals, and other viviparous animals, young born as embryos cannot thrive. In marsupials, the young are born during the embryonic stage and complete their development outside the uterus, attached to a teat within the mother's pouch.

  2. The developing young of an egg-laying animal before hatching.

  3. The sporophyte of a plant in its earliest stages of development, such as the miniature, partially developed plant contained within a seed before germination.


embryonic adjective (ěm'brē-ŏn'ĭk)
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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embryos in Culture
embryo [(em-bree-oh)]

A developing plant or animal. A plant embryo is an undeveloped plant inside a seed. An animal embryo is the animal as it develops from the single cell of the zygote until birth. Among humans and most other mammals, the embryo is carried in the mother's womb.

Note: The term is occasionally used to denote a new or developing idea or project: “The idea for the complete theory was already present in his work, in embryo form, in 1950.”
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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