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cambrian

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cambrian


  4  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Primordial  \Pri*mor"di*al\,  a.  [L.  primordialis,  from  primordium 
  the  first  beginning;  primus  first  +  ordiri  to  begin  a  web,  to 
  begin:  cf  F.  primordial.] 
  1.  First  in  order  primary;  original;  of  earliest  origin;  as 
  primordial  condition.  ``The  primordial  facts  of  our 
  intelligent  nature.''  --Sir  W.  Hamilton. 
 
  2.  (Geol.)  Of  or  pertaining  to  the  lowest  beds  of  the 
  Silurian  age,  corresponding  to  the  Acadian  and  Potsdam 
  periods  in  American  geology.  It  is  called  also  {Cambrian}, 
  and  by  many  geologists  is  separated  from  the  Silurian. 
 
  3.  (Biol.)  Originally  or  earliest  formed  in  the  growth  of  an 
  individual  or  organ;  as  a  primordial  leaf;  a  primordial 
  cell. 
 
  {Primordial  utricle}  (Bot.),  the  interior  lining  of  a  young 
  vegetable  cell. 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Cambrian  \Cam"bri*an\,  a. 
  1.  (Geog.)  Of  or  pertaining  to  Cambria  or  Wales. 
 
  2.  (Geol.)  Of  or  pertaining  to  the  lowest  subdivision  of  the 
  rocks  of  the  Silurian  or  Molluscan  age;  --  sometimes 
  described  as  inferior  to  the  Silurian.  It  is  named  from 
  its  development  in  Cambria  or  Wales.  See  the  Diagram  under 
  {Geology}. 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Cambrian  \Cam"bri*an\,  n. 
  1.  A  native  of  Cambria  or  Wales. 
 
  2.  (Geol.)  The  Cambrian  formation. 
 
  From  WordNet  r  1.6  [wn]: 
 
  Cambrian 
  n  :  from  500  million  to  600  million  years  ago;  marine 
  invertebrates  [syn:  {Cambrian},  {Cambrian  period}] 




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