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Glossary of Reproduction - Development Terms
beginning with letter E
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ectoderm Tweet Definition of ectoderm Like Definition of ectoderm on Facebook
noun
  1. One of the three tissue layers in the embryo of a metazoan animal. Through development, it will produce the epidermis (skin) and nervous system of the adult.
ectomere Tweet Definition of ectomere Like Definition of ectomere on Facebook
noun
  1. Any of the blastomeres from which the ectoderm forms
egg Tweet Definition of egg Like Definition of egg on Facebook
noun
  1. (context, zoology, countable) An approximately spherical or ellipsoidal body produced by birds, snakes, insects and other animals housing the embryo during its development.
  2. (countable) The egg of a domestic fowl as an item of food.
  3. (uncountable) The contents of one or more (hen's usually) eggs as a culinary ingredient, etc.
I also determine the minimal amount of egg required to make good mayonnaise.
  1. (context, biology, countable) The female primary cell, the ovum.
verb
  1. To throw eggs at.
  2. (with "on"): To encourage.
  3. To add beaten egg (cooking).
eggshell Tweet Definition of eggshell Like Definition of eggshell on Facebook
noun
  1. the shell around an egg
  2. (colour) a pale yellowish-whitish colour, like that of the eggshell.
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adjective
  1. (colour) of a pale yellowish-whitish colour, like that of the eggshell.
  2. Exhibiting the thinness, translucency or near-transparency, and fragility of an eggshell; as in eggshell porcelain.
embolic Tweet Definition of embolic Like Definition of embolic on Facebook
adjective
  1. (pathology) Of or relating to an embolus or an embolism.
  2. Pertaining to emboly.
embryo Tweet Definition of embryo Like Definition of embryo on Facebook
noun
  1. An unborn baby that is less developed than a foetus.
  2. An organism in the earlier stages of development before it emerges from the egg, or before metamorphosis.
  3. In viviparous animals, the young animal's earliest stages in the mother's body
  4. In humans, usually the cell growth up to the end of the seventh week in the mother's body
  5. (botany) A rudimentary plant contained in the seed.
  6. The beginning; the first stage of anything.
embryology Tweet Definition of embryology Like Definition of embryology on Facebook
noun
  1. The scientific study of embryos.
embryonic Tweet Definition of embryonic Like Definition of embryonic on Facebook
adjective
  1. (embryology) Of or related to an embryo.
  2. (figuratively) Something, especially a project, that is very new and is still evolving; something that has yet to reach its full potential.
endoderm Tweet Definition of endoderm Like Definition of endoderm on Facebook
noun
  1. One of the three tissue layers in the embryo of a metazoan animal. Through development, it will produce the digestive system of the adult.
endogenous Tweet Definition of endogenous Like Definition of endogenous on Facebook
adjective
  1. produced, originating or growing from within
  2. of a disease, caused by factors within the body
epiblast Tweet Definition of epiblast Like Definition of epiblast on Facebook
noun
  1. the outer layer of a blastula that, after gastrulation, becomes the ectoderm
exogamy Tweet Definition of exogamy Like Definition of exogamy on Facebook
noun
  1. marriage to a person belonging to a tribe or group other than your own as required by custom or law
  1. (biology) the fusion of two unrelated gametes

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