Epiboly is a cell movement that occurs in the early embryo, at the same time as gastrulation. It is one of many movements in the early embryo that allow for dramatic physical restructuring (see morphogenesis). The movement is generally characterized as being a thinning and spreading of cell layers. Epiboly has been most extensively studied in zebr...
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http://en.wikipedia.org/wiki/Epiboly
• (n.) Epibolic invagination. See under Invagination.
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http://thinkexist.com/dictionary/meaning/epiboly/
(from the article `animal development`) ...inappropriate term, since no growth or increase of mass is involved. The future ectoderm simply thins out, expands, and covers a greater surface ...
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http://www.britannica.com/eb/a-z/e/36
The process in early embryonic development in which a monolayer of dividing cells (blastoderm) spreads over the surface of a large yolk-filled egg (eg. those of teleosts, reptiles and birds).
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E·pib'o·ly noun [ Confer Greek ... a throwing upon.]
(Biol.) Epibolic invagination. See under
Invagination .
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http://www.encyclo.co.uk/webster/E/53
Type: Term Pronunciation: ē-pib′ŏ-lē Definitions: 1. A process involved in gastrulation of telolecithal eggs in which, as a result of differential growth, some of the cells of the protoderm move over the surface toward the lips of the blastopore. 2. Growth of epithelium in an organ culture to surround the underlying mesenchymal...
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http://www.medilexicon.com/medicaldictionary.php?t=29653
the movement and spreading out of cells into sheets of tissue that overlie or surround other groups of cells, esp. as in the formation of certain gastrulas.
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https://www.infoplease.com/dictionary/epiboly
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