The Collaborative International Dictionary of English v.0.48:

Suttee \Sut*tee"\, n. [Skr. sat[imac] a faithful wife, fem. of
   sant existing, real, true, good, p. pr. of as to be. Cf.
   Sooth.]
   1. A Hindoo widow who immolates herself, or is immolated, on
      the funeral pile of her husband; -- so called because this
      act of self-immolation is regarded as envincing excellence
      of wifely character. [India]
      [1913 Webster]

   2. The act of burning a widow on the funeral pile of her
      husband. [India]
      [1913 Webster]

   Note: The practice, though abolished in British India law in
         1829, is not wholly prevented.
         [1913 Webster]

WordNet (r) 3.0 (2006):

suttee
    n 1: the act of a Hindu widow willingly cremating herself on the
         funeral pyre of her dead husband

Moby Thesaurus II by Grady Ward, 1.0:

70 Moby Thesaurus words for "suttee":
   blazing, blistering, branding, burning, burnt offering,
   calcination, car of Jagannath, carbonization, cauterization,
   cautery, cineration, collection, combustion, concremation,
   cracking, cremation, cupellation, deflagration,
   destructive distillation, disembowelment, distillation, distilling,
   drink offering, ex voto offering, felo-de-se, flaming, hara-kiri,
   heave offering, hecatomb, holocaust, human sacrifice, immolation,
   incense, incineration, infanticide, libation, mactation,
   mass suicide, oblation, offering, offertory, oxidation,
   oxidization, parching, peace offering, piacular offering,
   pyrolysis, refining, ritual suicide, sacramental offering,
   sacrifice, scapegoat, scorching, scorification, searing,
   self-destruction, self-immolation, self-murder, self-sacrifice,
   seppuku, singeing, smelting, suicide, sutteeism, thank offering,
   the stake, thermogenesis, vesication, votive offering,
   whole offering