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cytogenesis

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cytogenesis


  3  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Cell  \Cell\,  n.  [OF.  celle,  fr  L.  cella;  akin  to  celare  to 
  hide,  and  E.  hell,  helm,  conceal.  Cf  {Hall}.] 
  1.  A  very  small  and  close  apartment,  as  in  a  prison  or  in  a 
  monastery  or  convent;  the  hut  of  a  hermit. 
 
  The  heroic  confessor  in  his  cell.  --Macaulay. 
 
  2.  A  small  religious  house  attached  to  a  monastery  or 
  convent.  ``Cells  or  dependent  priories.''  --Milman. 
 
  3.  Any  small  cavity,  or  hollow  place 
 
  4.  (Arch.) 
  a  The  space  between  the  ribs  of  a  vaulted  roof. 
  b  Same  as  {Cella}. 
 
  5.  (Elec.)  A  jar  of  vessel,  or  a  division  of  a  compound 
  vessel,  for  holding  the  exciting  fluid  of  a  battery. 
 
  6.  (Biol.)  One  of  the  minute  elementary  structures,  of  which 
  the  greater  part  of  the  various  tissues  and  organs  of 
  animals  and  plants  are  composed. 
 
  Note:  All  cells  have  their  origin  in  the  primary  cell  from 
  which  the  organism  was  developed.  In  the  lowest  animal 
  and  vegetable  forms,  one  single  cell  constitutes  the 
  complete  individual,  such  being  called  unicelluter 
  orgamisms  A  typical  cell  is  composed  of  a  semifluid 
  mass  of  protoplasm,  more  or  less  granular,  generally 
  containing  in  its  center  a  nucleus  which  in  turn 
  frequently  contains  one  or  more  nucleoli,  the  whole 
  being  surrounded  by  a  thin  membrane,  the  cell  wall.  In 
  some  cells,  as  in  those  of  blood,  in  the  am[oe]ba,  and 
  in  embryonic  cells  (both  vegetable  and  animal),  there 
  is  no  restricting  cell  wall,  while  in  some  of  the 
  unicelluliar  organisms  the  nucleus  is  wholly  wanting. 
  See  Illust.  of  {Bipolar}. 
 
  {Air  cell}.  See  {Air  cell}. 
 
  {Cell  development}  (called  also  {cell  genesis},  {cell 
  formation},  and  {cytogenesis}),  the  multiplication,  of 
  cells  by  a  process  of  reproduction  under  the  following 
  common  forms;  segmentation  or  fission,  gemmation  or 
  budding,  karyokinesis,  and  endogenous  multiplication.  See 
  {Segmentation},  {Gemmation},  etc 
 
  {Cell  theory}.  (Biol.)  See  {Cellular  theory},  under 
  {Cellular}. 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Cytogenesis  \Cy`to*gen"e*sis\  (s?`t?-j?n"?-s?s),  n.  [Gr.  ???? 
  hollow  vessel  +  E.  genesis.]  (Biol.) 
  Development  of  cells  in  animal  and  vegetable  organisms.  See 
  {Gemmation},  {Budding},  {Karyokinesis};  also  {Cell 
  development},  under  {Cell}. 
 
  From  WordNet  r  1.6  [wn]: 
 
  cytogenesis 
  n  :  the  origin  and  development  of  cells 




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