4  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Index  \In"dex\,  n.;  pl  E.  {Indexes},  L.  {Indices}(?).  [L.:  cf 
  F.  index.  See  {Indicate},  {Diction}.] 
  1.  That  which  points  out  that  which  shows,  indicates, 
  manifests,  or  discloses. 
 
  Tastes  are  the  indexes  of  the  different  qualities  of 
  plants.  --Arbuthnot. 
 
  2.  That  which  guides,  points  out  informs,  or  directs;  a 
  pointer  or  a  hand  that  directs  to  anything  as  the  hand  of 
  a  watch,  a  movable  finger  on  a  gauge,  scale,  or  other 
  graduated  instrument.  In  printing,  a  sign  [[hand]]  used  to 
  direct  particular  attention  to  a  note  or  paragraph;  -- 
  called  also  {fist}. 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
 
 
  3.  A  table  for  facilitating  reference  to  topics,  names  and 
  the  like  in  a  book;  --  usually  alphabetical  in 
  arrangement,  and  printed  at  the  end  of  the  volume. 
 
  4.  A  prologue  indicating  what  follows.  [Obs.]  --Shak. 
 
  5.  (Anat.)  The  second  digit,  that  next  pollex,  in  the  manus, 
  or  hand;  the  forefinger;  index  finger. 
 
  6.  (Math.)  The  figure  or  letter  which  shows  the  power  or  root 
  of  a  quantity;  the  exponent.  [In  this  sense  the  plural  is 
  always  {indices}.] 
 
  {Index  error},  the  error  in  the  reading  of  a  mathematical 
  instrument  arising  from  the  zero  of  the  index  not  being  in 
  complete  adjustment  with  that  of  the  limb,  or  with  its 
  theoretically  perfect  position  in  the  instrument;  a 
  correction  to  be  applied  to  the  instrument  readings  equal 
  to  the  error  of  the  zero  adjustment. 
 
  {Index  expurgatorius}.  [L.]  See  {Index  prohibitorius} 
  (below). 
 
  {Index  finger}.  See  {Index},  5. 
 
  {Index  glass},  the  mirror  on  the  index  of  a  quadrant, 
  sextant,  etc 
 
  {Index  hand},  the  pointer  or  hand  of  a  clock,  watch,  or  other 
  registering  machine;  a  hand  that  points  to  something 
 
  {Index  of  a  logarithm}  (Math.),  the  integral  part  of  the 
  logarithm,  and  always  one  less  than  the  number  of  integral 
  figures  in  the  given  number.  It  is  also  called  the 
  {characteristic}. 
 
  {Index  of  refraction},  or  {Refractive  index}  (Opt.),  the 
  number  which  expresses  the  ratio  of  the  sine  of  the  angle 
  of  incidence  to  the  sine  of  the  angle  of  refraction.  Thus 
  the  index  of  refraction  for  sulphur  is  2,  because  when 
  light  passes  out  of  air  into  sulphur,  the  sine  of  the 
  angle  of  incidence  is  double  the  sine  of  the  angle  of 
  refraction. 
 
  {Index  plate},  a  graduated  circular  plate,  or  one  with 
  circular  rows  of  holes  differently  spaced;  used  in 
  machines  for  graduating  circles,  cutting  gear  teeth,  etc 
 
 
  {Index  prohibitorius}  [L.],  or  {Prohibitory  index}  (R.  C. 
  Ch.),  a  catalogue  of  books  which  are  forbidden  by  the 
  church  to  be  read;  the  index  expurgatorius  [L.],  or 
  expurgatory  index,  is  a  catalogue  of  books  from  which 
  passages  marked  as  against  faith  or  morals  must  be  removed 
  before  Catholics  can  read  them  These  catalogues  are 
  published  with  additions,  from  time  to  time,  by  the 
  Congregation  of  the  Index,  composed  of  cardinals, 
  theologians,  etc.,  under  the  sanction  of  the  pope.  --Hook. 
 
  {Index  rerum}  [L.],  a  tabulated  and  alphabetized  notebook, 
  for  systematic  preservation  of  items,  quotations,  etc 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Indices  \In"di*ces\,  n.  pl 
  See  {Index}. 
 
  From  The  Free  On-line  Dictionary  of  Computing  (13  Mar  01)  [foldoc]: 
 
  indices 
 
    A  plural  of  "{index}". 
 
 

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