The Collaborative International Dictionary of English v.0.48:

Obituary \O*bit"u*a*ry\, a. [See Obit.]
   Of or pertaining to the death of a person or persons; as, an
   obituary notice; obituary poetry.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

obituary \o*bit"u*a*ry\, n.; pl. Obituaries. [Cf. F.
   obituaire. See Obit.]
   1. That which pertains to, or is called forth by, the obit or
      death of a person; esp., an account of a deceased person.
      [1913 Webster]

   2. Especially: A notice of the death of a person, published
      in a newspaper or other periodical, accompanied by a
      biographical sketch which may be brief ro extended; as,
      the funeral director arranged placed an obituary in the
      local papaer.
      [1913 Webster +PJC]

   3. pl. The section of a newspaper in which obituaries[2] are
      printed; as, I saw the notice of his death in the
      obituaries.
      [PJC]

   4. (R. C. Ch.) A list of the dead, or a register of
      anniversary days when service is performed for the dead.
      [1913 Webster]

WordNet (r) 3.0 (2006):

obituary
    n 1: a notice of someone's death; usually includes a short
         biography [syn: obituary, obit, necrology]

Moby Thesaurus II by Grady Ward, 1.0:

120 Moby Thesaurus words for "obituary":
   Clio, Muse of history, adventures, annals, arch, archival,
   autobiography, barrow, bill of mortality, biographical sketch,
   biography, body count, boundary stone, brass, bust, cairn,
   case history, casualty list, cenotaph, chronicle, chronicles,
   chronology, cinerary, column, confessions, cromlech, cross, cup,
   curriculum vitae, cyclolith, death roll, diary, dirgelike, dismal,
   documental, documentary, documentational, dolmen, epigraphic,
   epitaphic, eulogy, exequial, experiences, feral, footstone,
   fortunes, funebrial, funebrious, funebrous, funeral, funerary,
   funereal, grave, gravestone, hagiography, hagiology, headstone,
   historiography, history, hoarstone, inscription, journal, legend,
   life, life and letters, life story, marker, martyrology, mausoleum,
   megalith, memento, memoir, memoirs, memorabilia, memorial,
   memorial arch, memorial column, memorial statue, memorial stone,
   memorials, menhir, monolith, monument, mortuary, mortuary roll,
   mound, mournful, necrological, necrologue, necrology, obelisk,
   obit, obsequial, photobiography, pillar, plaque, prize, profile,
   pyramid, record, register of deaths, reliquary, remembrance,
   resume, ribbon, rostral column, sepulchral, shaft, shrine, stela,
   stone, story, stupa, tablet, testimonial, theory of history, tomb,
   tombstone, tope, trophy