The Collaborative International Dictionary of English v.0.48:

Obelize \Ob"e*lize\ ([o^]b"[e^]*l[imac]z), v. t. [imp. & p. p.
   Obelized ([o^]b"[e^]*l[imac]zd); p. pr. & vb. n.
   Obelizing ([o^]b"[e^]*l[imac]*z[i^]ng).] [Gr. 'obeli`zein,
   fr. 'obelo`s. See Obelus.]
   To designate with an obelus; to mark as doubtful or
   spirituous. [R.]
   [1913 Webster]