The Collaborative International Dictionary of English v.0.48:

petrified \petrified\ adj.
   1. Converted into stone.
      [WordNet 1.5 +PJC]

   2. Converted into a mineral; as, petrified wood.

   Syn: mineralized.
        [WordNet 1.5]

   3. Same as terrified; as, petrified by the sight of the
      approaching bear.

   Syn: panicky, panic-stricken, panic-struck, terrified,
        frightened.
        [WordNet 1.5]

   4. rendered unable to act due to intense fear. petrified with
      fear

   Syn: frozen.
        [PJC]

   5. Rendered lifeless or inactive; as, an imagination
      petrified by habitual television viewing.

   Syn: frozen; ossified.
        [PJC]

The Collaborative International Dictionary of English v.0.48:

Petrify \Pet"ri*fy\ (p[e^]t"r[i^]*f[imac]), v. t. [imp. & p. p.
   Petrified; p. pr. & vb. n. Petrifying.] [L. petra rock,
   Gr. pe`tra (akin to pe`tros a stone) + -fy: cf. F.
   p['e]trifier. Cf. Parrot, Petrel, Pier.]
   1. To convert, as any animal or vegetable matter, into stone
      or stony substance; as, petrified wood.
      [1913 Webster]

            A river that petrifies any sort of wood or leaves.
                                                  --Kirwan.
      [1913 Webster]

   2. To make callous or obdurate; to transform, as by
      petrifaction; as, to petrify the heart. Young. "Petrifying
      accuracy." --Sir W. Scott.
      [1913 Webster]

            And petrify a genius to a dunce.      --Pope.
      [1913 Webster]

            A hideous fatalism, which ought, logically, to
            petrify your volition.                --G. Eliot.
      [1913 Webster]

   3. To paralyze, especially with fear; to stupefy; as, she was
      petrified by the sight of the bear in her tent.
      [PJC]

            The poor, petrified journeyman, quite unconscious of
            what he was doing.                    --De Quincey.
      [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

111 Moby Thesaurus words for "petrified":
   Gothic, Victorian, adamant, adamantine, afraid, aghast,
   alabastrine, antediluvian, antiquated, antique, appalled, archaic,
   asbestine, ashen, astonished, astounded, awed, awestricken,
   awestruck, backed, benumbed, blanched, calcified, callous,
   calloused, case-hardened, classical, confounded, cowed, crusted,
   crusty, crystallized, deadly pale, dumbfounded, dumbstruck,
   flabbergasted, flintlike, flinty, fossil, fossilized, frightened,
   frozen, granitelike, granitic, granulated, graphitic,
   gray with fear, grown old, hardened, hornified, horrified,
   horror-struck, incrusted, indurate, indurated, inorganic,
   intimidated, lapidified, lithic, marblelike, medieval, micaceous,
   mid-Victorian, mineral, numbed, of other times, old-world,
   ossified, pale as death, pallid, panic-stricken, paralyzed,
   petrogenic, reinforced, rigidified, rock, scared stiff,
   scared to death, sclerotic, set, shocked, silicic, slaty,
   solidified, speechless, steeled, stiffened, stone, strengthened,
   stunned, stupefied, sulfuric, sulfurous, superannuated, terrified,
   terror-crazed, terror-haunted, terror-ridden, terror-riven,
   terror-shaken, terror-smitten, terror-stricken, terror-struck,
   terror-troubled, thunderstruck, toughened, undone, unmanned,
   unnerved, unstrung, vitrified