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blastula

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blastula


  2  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Blastula  \Blas"tu*la\,  n.  [NL.,  dim.  of  Gr  blasto`s  a  sprout.] 
  (Biol.) 
  That  stage  in  the  development  of  the  ovum  in  which  the  outer 
  cells  of  the  morula  become  more  defined  and  form  the 
  blastoderm. 
 
  From  WordNet  r  1.6  [wn]: 
 
  blastula 
  n  :  early  stage  of  an  embryo  produced  by  cleavage  of  an  ovum;  a 
  hollow  sphere  whose  wall  is  composed  of  a  single  layer  of 
  cells  [syn:  {blastosphere},  {blastodermic  vesicle}] 




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