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laurentian

laurentian


  1  definition  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Laurentian  \Lau*ren"tian\,  a. 
  Pertaining  to  or  near  the  St  Lawrence  River;  as  the 
  Laurentian  hills. 
 
  {Laurentian  period}  (Geol.),  the  lower  of  the  two  divisions 
  of  the  Arch[ae]an  age;  --  called  also  {the  Laurentian}.