law: Special Marriage Act, 1954 
  2. Definitions
   4  [***]
  (b) "degrees of
  
  prohibited relationship"-a man and any of the persons mentioned in part I
  
  of the First Schedule and a woman and any of the persons mentioned in Part II
  
  of the said Schedule are within the degrees of prohibited relationship;
  Explanation I.- Relationship
  
  includes,-
  (a) relationship by half
  
  or uterine blood as well as by full blood;
  (b) illegitimate blood
  
  relationship as well as legitimate;
  (c) relationship by
  
  adoption as well as by blood;
  and all terms of
  
  relationship in this Act shall be construed accordingly.
  Explanation II.- "Full blood"
  
  and "half blood"-two persons are said to be related to each other by
  
  full blood when they are descended from a common ancestor by the same wife and
  
  by half blood when they are descended from a common ancestor but by different
  
  wives.
  Explanation III.- "Uterine
  
  blood"-two persons are said to be related to each other by uterine blood
  
  when they are descended from a common ancestress but by different husbands.
  Explanation IV .- In explanations II
  
  and III, "ancestor" includes the father and "ancestress"
  
  the mother;
   5  [***]
  (d)
  
  "district", in relation to a Marriage Office, means the area for
  
  which he is appointed as such under sub-section (1) or sub-section (2) of
  
  section 3;
   6  [(e) "district
  
  court" means, in any area for which there is a city civil court, that
  
  court, and in any other area, the principal civil court of original
  
  jurisdiction, and includes any other civil court which may be specified by the
  
  State Government by notification in the Official Gazette as having jurisdiction
  
  in respect of the matters dealt with in this Act;]
  (f)
  
  "prescribed" means prescribed by rules made under this Act;
   7  [(g) "State
  
  Government", in relation to a Union territory, means the administrator
  
  thereof.]