2  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Involution  \In`vo*lu"tion\,  n.  [L.  involutio:  cf  F.  involution. 
  See  {Involve}.] 
  1.  The  act  of  involving  or  infolding. 
 
  2.  The  state  of  being  entangled  or  involved;  complication; 
  entanglement. 
 
  All  things  are  mixed,  and  causes  blended,  by  mutual 
  involutions.  --Glanvill. 
 
  3.  That  in  which  anything  is  involved,  folded,  or  wrapped; 
  envelope.  --Sir  T.  Browne. 
 
  4.  (Gram.)  The  insertion  of  one  or  more  clauses  between  the 
  subject  and  the  verb  in  a  way  that  involves  or 
  complicates  the  construction. 
 
  5.  (Math.)  The  act  or  process  of  raising  a  quantity  to  any 
  power  assigned;  the  multiplication  of  a  quantity  into 
  itself  a  given  number  of  times;  --  the  reverse  of 
  evolution. 
 
  6.  (Geom.)  The  relation  which  exists  between  three  or  more 
  sets  of  points,  a.a',  b.b',  c.c',  so  related  to  a  point  O 
  on  the  line  that  the  product  Oa.Oa'  =  Ob.Ob'  =  Oc.Oc'  is 
  constant.  Sets  of  lines  or  surfaces  possessing 
  corresponding  properties  may  be  in  involution. 
 
  7.  (Med.)  The  return  of  an  enlarged  part  or  organ  to  its 
  normal  size,  as  of  the  uterus  after  pregnancy. 
 
  From  WordNet  r  1.6  [wn]: 
 
  involution 
  n  1:  the  process  of  raising  a  quantity  to  some  assigned  power 
  [syn:  {exponentiation}] 
  2:  the  act  of  enfolding  something  [syn:  {enfolding}] 

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