3  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Functional  \Func"tion*al\,  a. 
  1.  Pertaining  to  or  connected  with  a  function  or  duty; 
  official. 
 
  2.  (Physiol.)  Pertaining  to  the  function  of  an  organ  or  part 
  or  to  the  functions  in  general. 
 
  {Functional  disease}  (Med.),  a  disease  of  which  the  symptoms 
  cannot  be  referred  to  any  appreciable  lesion  or  change  of 
  structure;  the  derangement  of  an  organ  arising  from  a 
  cause  often  unknown,  external  to  itself  opposed  to 
  organic  disease,  in  which  the  organ  itself  is  affected. 
 
  From  WordNet  r  1.6  [wn]: 
 
  functional 
  adj  1:  designed  for  or  capable  of  a  particular  function  or  use  "a 
  style  of  writing  in  which  every  word  is  functional"; 
  "functional  architecture"  [ant:  {nonfunctional}] 
  2:  (pathology)  involving  or  affecting  function  rather  than 
  physiology;  "functional  deafness"  [ant:  {organic}] 
  3:  relating  to  or  based  on  function  especially  as  opposed  to 
  structure;  "the  problem  now  is  not  a  constitutional  one 
  it  is  a  functional  one";  "delegates  elected  on  a 
  functional  rather  than  a  geographical  basis" 
  4:  fit  or  ready  for  use  or  service;  "the  toaster  was  still 
  functional  even  after  being  dropped";  "the  lawnmower  is  a 
  bit  rusty  but  still  usable";  "an  operational  aircraft"; 
  "the  dishwasher  is  now  in  wording  order"  [syn:  {usable},  {useable}, 
  {in  working  order(p)},  {operable},  {operational}] 
  5:  designed  for  or  adapted  to  a  function  or  use  "functional 
  education  selects  knowledge  that  is  concrete  and  usable 
  rather  than  abstract  and  theoretical";  "functional 
  architecture" 
  6:  (of  e.g.  a  machine)  performing  or  capable  of  performing;  "in 
  running  (or  working)  order";  "a  functional  set  of  brakes" 
  [syn:  {running(a)},  {operative},  {working(a)}] 
 
  From  The  Free  On-line  Dictionary  of  Computing  (13  Mar  01)  [foldoc]: 
 
  functional 
 
  1.  Working  correctly. 
 
  2.  Pertaining  to  {functional  programming}. 
 
  3.  {higher-order  function}. 
 
 

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