What is embryo?

  • (noun): (botany) a minute rudimentary plant contained within a seed or an archegonium.
    See also — Additional definitions below


An embryo (irregularly from Greek: ἔμβρυον, plural ἔμβρυα, lit. "that which grows," from en- "in" + bryein, "to swell, be full"; the proper Latinate form would be embryum) is a multicellular diploid eukaryote in its earliest stage of development, from the time of first cell division until birth, hatching, or germination. In humans, it is called an embryo until about eight weeks after fertilization (i.e. ten weeks after the last menstrual period or LMP), and from then it is instead called a fetus.

Read more about Embryo.

Some articles on embryo:

Lateral Nasal Prominence - Additional Images
... Under surface of the head of a human embryo about twenty-nine days old Head end of human embryo of about thirty to thirty-one days Same embryo as shown in Fig ...
Human Embryogenesis
... Human embryogenesis is the process of cell division and cellular differentiation of the human embryo that occurs during early stages of development ... ovum (egg) prior to fertilization, through the development of the early embryo, up until the time of implantation ... In humans, the embryo is referred to as a fetus in the later stages of prenatal development ...
Snowflake Children - Criticism of The Term
... Members of the Nightlight Christian Adoptions, the Embryo Adoption Awareness Campaign, and Embryos Alive Adoption Agency use the term "snowflake baby" as a synonym for any ... However, that use of the term, and the related term "embryo adoption," are at times controversial in some circles ...
Cytoplasmic Transfer - Candidates
... mitochondria can lead to recurrent implantation failure, high levels of embryo fragmentation and overall poor embryo development ... desirable for couples or women who wish to genetically contribute to any resulting embryo, given cytoplasmic transfer does not interfere with the ...
Plant Embryos
... Further information Sporophyte In botany, a seed plant embryo is part of a seed, consisting of precursor tissues for the leaves, stem (see hypocotyl), and root (see radicle), as well as one or ... Once the embryo begins to germinate — grow out from the seed — it is called a seedling ... Plants that do not produce seeds, but do produce an embryo, include the bryophytes and ferns ...

More definitions of "embryo":

  • (noun): 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.
    Synonyms: conceptus, fertilized egg

Famous quotes containing the word embryo:

    Even in civilized communities, the embryo man passes through the hunter stage of development.
    Henry David Thoreau (1817–1862)