epiboly definition, epiboly meaning | English dictionary

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      n   pl   , -lies     (Embryol)   a process that occurs during gastrulation in vertebrates, in which cells on one side of the blastula grow over and surround the remaining cells and yolk and eventually form the ectoderm  
     (C19: from Greek epibolea laying on, from epiballein to throw on, from epi- + ballein to throw)  
  epibolic      adj  
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