• synonyms


[gas-troo-ley-shuh n]
noun Embryology.
  1. the formation of a gastrula.
  2. any process, as invagination, by which a blastula or other form of embryo is converted into a gastrula.
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Origin of gastrulation

First recorded in 1875–80; gastrulate + -ion
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for gastrulation

Historical Examples of gastrulation

  • The conditions of gastrulation and of the formation of the germinal layers are similar.

    The Biological Problem of To-day

    Oscar Hertwig

  • It is desirable only further to explain that gastrulation does not take place in all the Metazoa after exactly the same plan.

British Dictionary definitions for gastrulation


  1. embryol the process in which a gastrula is formed from a blastula by the inward migration of cells
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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

gastrulation in Medicine


  1. Transformation of the blastula into the gastrula.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.