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rationalmore about rational


  5  definitions  found 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
  Rational  \Ra"tion*al\,  n. 
  A  rational  being  --Young. 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
  Rational  \Ra"tion*al\,  a.  [L.  rationalis:  cf  F.  rationnel  See 
  {Ratio},  {Reason},  and  cf  {Rationale}.] 
  1.  Relating  to  reason;  not  physical;  mental. 
  Moral  philosophy  was  his  chiefest  end  for  the 
  rational,  the  natural,  and  mathematics  .  .  .  were 
  but  simple  pastimes  in  comparison  of  the  other 
  --Sir  T. 
  2.  Having  reason,  or  the  faculty  of  reasoning;  endowed  with 
  reason  or  understanding;  reasoning. 
  It  is  our  glory  and  happiness  to  have  a  rational 
  nature.  --Law. 
  3.  Agreeable  to  reason;  not  absurd,  preposterous, 
  extravagant,  foolish,  fanciful,  or  the  like  wise; 
  judicious;  as  rational  conduct;  a  rational  man. 
  4.  (Chem.)  Expressing  the  type  structure,  relations,  and 
  reactions  of  a  compound;  graphic;  --  said  of  formul[ae]. 
  See  under  {Formula}. 
  {Rational  horizon}.  (Astron.)  See  {Horizon},  2 
  b  . 
  {Rational  quantity}  (Alg.),  one  that  can  be  expressed  without 
  the  use  of  a  radical  sign,  or  in  extract  parts  of  unity; 
  --  opposed  to  irrational  or  radical  quantity. 
  {Rational  symptom}  (Med.),  one  elicited  by  the  statements  of 
  the  patient  himself  and  not  as  the  result  of  a  physical 
  From  WordNet  r  1.6  [wn]: 
  adj  1:  consistent  with  or  based  on  or  using  reason;  "rational 
  behavior";  "a  process  of  rational  inference"; 
  "rational  thought"  [ant:  {irrational}] 
  2:  associated  with  or  requiring  the  use  of  the  mind; 
  "intellectual  problems";  "the  triumph  of  the  rational  over 
  the  animal  side  of  man"  [syn:  {intellectual}] 
  3:  (math)  capable  of  being  expressed  as  a  quotient  of  integers; 
  "rational  numbers"  [ant:  {irrational}] 
  4:  having  its  source  in  or  being  guided  by  the  intellect 
  (distinguished  from  experience  or  emotion);  "a  rational 
  From  The  Free  On-line  Dictionary  of  Computing  (13  Mar  01)  [foldoc]: 
  [Mathematics]  a  fractional  number  n/d,  where  n  and  d  are 
  integers,  n  is  the  numerator  and  d  is  the  denominator.  The 
  set  of  all  rational  numbers  is  usually  called  Q. 
  Computers  do  not  usually  deal  with  rational  numbers  but 
  instead  convert  them  to  {real}  numbers  which  are  represented 
  (approximately  in  some  cases)  as  {floating-point}  numbers. 
  Compare  {irrational}. 
  From  THE  DEVIL'S  DICTIONARY  ((C)1911  Released  April  15  1993)  [devils]: 
  RATIONAL,  adj  Devoid  of  all  delusions  save  those  of  observation, 
  experience  and  reflection. 

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