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cell

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cell


  6  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Polar  \Po"lar\,  a.  [Cf.  F.  polaire.  See  {Pole}  of  the  earth.] 
  1.  Of  or  pertaining  to  one  of  the  poles  of  the  earth,  or  of  a 
  sphere;  situated  near  or  proceeding  from  one  of  the 
  poles;  as  polar  regions;  polar  seas;  polar  winds. 
 
  2.  Of  or  pertaining  to  the  magnetic  pole,  or  to  the  point  to 
  which  the  magnetic  needle  is  directed. 
 
  3.  (Geom.)  Pertaining  to  reckoned  from  or  having  a  common 
  radiating  point;  as  polar  co["o]rdinates. 
 
  {Polar  axis},  that  axis  of  an  astronomical  instrument,  as  an 
  equatorial,  which  is  parallel  to  the  earths  axis. 
 
  {Polar  bear}  (Zo["o]l.),  a  large  bear  ({Ursus,  or  Thalarctos, 
  maritimus})  inhabiting  the  arctic  regions.  It  sometimes 
  measures  nearly  nine  feet  in  length  and  weighs  1,600 
  pounds.  It  is  partially  amphibious,  very  powerful,  and  the 
  most  carnivorous  of  all  the  bears.  The  fur  is  white, 
  tinged  with  yellow.  Called  also  {White  bear}.  See  {Bear}. 
 
 
  {Polar  body},  {cell},  or  {globule}  (Biol.),  a  minute  cell 
  which  separates  by  karyokinesis  from  the  ovum  during  its 
  maturation.  In  the  maturation  of  ordinary  ova  two  polar 
  bodies  are  formed,  but  in  parthogenetic  ova  only  one  The 
  first  polar  body  formed  is  usually  larger  than  the  second 
  one  and  often  divides  into  two  after  its  separation  from 
  the  ovum.  Each  of  the  polar  bodies  removes  maternal 
  chromatin  from  the  ovum  to  make  room  for  the  chromatin  of 
  the  fertilizing  spermatozo["o]n;  but  their  functions  are 
  not  fully  understood. 
 
  {Polar  circles}  (Astron.  &  Geog.),  two  circles,  each  at  a 
  distance  from  a  pole  of  the  earth  equal  to  the  obliquity 
  of  the  ecliptic,  or  about  23[deg]  28',  the  northern  called 
  the  arctic  circle,  and  the  southern  the  antarctic  circle. 
 
 
  {Polar  clock},  a  tube,  containing  a  polarizing  apparatus, 
  turning  on  an  axis  parallel  to  that  of  the  earth,  and 
  indicating  the  hour  of  the  day  on  an  hour  circle,  by  being 
  turned  toward  the  plane  of  maximum  polarization  of  the 
  light  of  the  sky,  which  is  always  90[deg]  from  the  sun. 
 
  {Polar  co["o]rdinates}.  See  under  3d  {Co["o]rdinate}. 
 
  {Polar  dial},  a  dial  whose  plane  is  parallel  to  a  great 
  circle  passing  through  the  poles  of  the  earth.  --Math. 
  Dict. 
 
  {Polar  distance},  the  angular  distance  of  any  point  on  a 
  sphere  from  one  of  its  poles,  particularly  of  a  heavenly 
  body  from  the  north  pole  of  the  heavens. 
 
  {Polar  equation  of  a  line}  or  {surface},  an  equation  which 
  expresses  the  relation  between  the  polar  co["o]rdinates  of 
  every  point  of  the  line  or  surface. 
 
  {Polar  forces}  (Physics),  forces  that  are  developed  and  act 
  in  pairs,  with  opposite  tendencies  or  properties  in  the 
  two  elements,  as  magnetism,  electricity,  etc 
 
  {Polar  hare}  (Zo["o]l.),  a  large  hare  of  Arctic  America 
  ({Lepus  arcticus}),  which  turns  pure  white  in  winter.  It 
  is  probably  a  variety  of  the  common  European  hare  ({L. 
  timidus}). 
 
  {Polar  lights},  the  aurora  borealis  or  australis. 
 
  {Polar},  or  {Polaric},  {opposition}  or  {contrast}  (Logic),  an 
  opposition  or  contrast  made  by  the  existence  of  two 
  opposite  conceptions  which  are  the  extremes  in  a  species, 
  as  white  and  black  in  colors;  hence  as  great  an 
  opposition  or  contrast  as  possible. 
 
  {Polar  projection}.  See  under  {Projection}. 
 
  {Polar  spherical  triangle}  (Spherics),  a  spherical  triangle 
  whose  three  angular  points  are  poles  of  the  sides  of  a 
  given  triangle.  See  4th  {Pole},  2. 
 
  {Polar  whale}  (Zo["o]l.),  the  right  whale,  or  bowhead.  See 
  {Whale}. 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Priory  \Pri"o*ry\,  n.;  pl  {Priories}.  [Cf.  LL  prioria  See 
  {Prior},  n.] 
  A  religious  house  presided  over  by  a  prior  or  prioress;  -- 
  sometimes  an  offshoot  of  an  subordinate  to  an  abbey,  and 
  called  also  {cell},  and  {obedience}.  See  {Cell},  2. 
 
  Note:  Of  such  houses  there  were  two  sorts:  one  where  the 
  prior  was  chosen  by  the  inmates,  and  governed  as 
  independently  as  an  abbot  in  an  abbey;  the  other  where 
  the  priory  was  subordinate  to  an  abbey,  and  the  prior 
  was  placed  or  displaced  at  the  will  of  the  abbot. 
 
  {Alien  priory},  a  small  religious  house  dependent  on  a  large 
  monastery  in  some  other  country. 
 
  Syn:  See  {Cloister}. 
 
  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]: 
 
  Cell  \Cell\  (s[e^]l),  v.  t.  [imp.  &  p.  p.  {Celled}  (s[e^]ld).] 
  To  place  or  inclose  in  a  cell.  ``Celled  under  ground.''  [R.] 
  --Warner. 
 
  From  WordNet  r  1.6  [wn]: 
 
  cell 
  n  1:  any  small  compartment;  "the  cells  of  a  honeycomb" 
  2:  the  basic  structural  and  functional  unit  of  all  organisms; 
  cells  may  exist  as  independent  units  of  life  (as  in 
  monads)  or  may  form  colonies  or  tissues  as  in  higher 
  plants  and  animals 
  3:  a  device  that  delivers  an  electric  current  as  the  result  of 
  a  chemical  reaction  [syn:  {electric  cell}] 
  4:  a  small  unit  serving  as  the  nucleus  of  a  larger  political 
  movement  [syn:  {cadre}] 
  5:  small  room  is  which  a  monk  or  nun  lives  [syn:  {cubicle}] 
  6:  a  room  where  a  prisoner  is  kept  [syn:  {jail  cell},  {prison 
  cell}] 
 
  From  The  Free  On-line  Dictionary  of  Computing  (13  Mar  01)  [foldoc]: 
 
  cell 
 
    {ATM}'s  term  for  a  {packet}. 
 
  (1996-08-21) 
 
 




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