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- Dictionaryembryo/ˈɛmbrɪəʊ/
noun
- 1. an unborn or unhatched offspring in the process of development, in particular a human offspring during the period from approximately the second to the eighth week after fertilization (after which it is usually termed a fetus). Similar
- 2. a thing at a rudimentary stage that shows potential for development: "a simple commodity economy is merely the embryo of a capitalist economy" Similar
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The embryonic period varies from species to species. In human development, the term fetus is used instead of embryo after the ninth week after conception, whereas in zebrafish, embryonic development is considered finished when a bone called the cleithrum becomes visible.
: an animal in the early stages of growth and differentiation that are characterized by cleavage, the laying down of fundamental tissues, and the formation of primitive organs and organ systems. especially : the developing human individual from the time of implantation to the end of the eighth week after conception. b.
Jul 6, 2017 · An embryo refers to the early developmental stage of eukaryotic organisms following the fertilization of an egg (derived from a female) by sperm (derived from a male) as a method of sexual reproduction.
Aug 13, 2023 · Biology definition: An embryo is the stage of early development after fertilization up to the phase of initial organogenesis. It may also pertain to the multicellular organism itself that undergoes extensive and rapid growth and cell differentiation during the early stage of development.
an animal that is developing either in its mother's womb or in an egg, or a plant that is developing in a seed: Between the eighth week of development and birth a human embryo is called a foetus. in embryo formal. developing and not yet complete: The department's plans for enlargement are still in embryo. See more.
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.
an animal that is developing either in its mother's womb or in an egg, or a plant that is developing in a seed: Between the eighth week of development and birth a human embryo is called a fetus. in embryo formal. developing and not yet complete: The department's plans for enlargement are still in embryo. See more.
May 9, 2024 · Embryo, the early developmental stage of an animal while it is in the egg or within the uterus of the mother. In humans the term is applied to the unborn child until the end of the seventh week following conception; from the eighth week the unborn child is called a fetus.
embryo. noun. /ˈembriəʊ/ (plural embryos) Idioms. a young animal or plant in the very early stages of development before birth, or before coming out of its egg or seed, especially a human egg in the first eight weeks after fertilization. the current debate over cloning human embryos. compare fetus. Extra Examples. Topics Biology c1.
An embryo is an unborn animal or human being in the very early stages of development. The embryo lives in the amniotic cavity. ...the remarkable resilience of very young embryos.
