petrify

from The American Heritage® Dictionary of the English Language, 5th Edition.

• transitive verb To convert (wood or other organic matter) into a stony replica by petrifaction.
• transitive verb To cause to lose vitality or become impervious to change; deaden.
• transitive verb To stun or paralyze with terror; daze.

from The Century Dictionary.

• To convert into stone or a stony substance; change into stone.
• To make hard as stone; render hard or callous: as, to petrify the heart.
• To paralyze or stupefy as with fear or amazement: as, to petrify one with astonishment.
• To become stone or of a stony hardness, as organic matter by means of calcareous or other deposits in its cavities; hence, to change into lifeless hardness or rigidity.

from the GNU version of the Collaborative International Dictionary of English.

• intransitive verb To become stone, or of a stony hardness, as organic matter by calcareous deposits.
• intransitive verb Fig.: To become stony, callous, or obdurate.
• transitive verb To convert, as any animal or vegetable matter, into stone or stony substance.
• transitive verb To make callous or obdurate; to stupefy; to paralyze; to transform; as by petrifaction. Young.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• verb To harden organic matter by permeating with water and depositing dissolved minerals.
• verb To produce rigidness akin to stone.
• verb To immobilize with fright.
• verb intransitive To become stone, or of a stony hardness, as organic matter by calcareous deposits.
• verb intransitive, figuratively To become stony, callous, or obdurate.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• verb cause to become stonelike or stiff or dazed and stunned
• verb change into stone
• verb make rigid and set into a conventional pattern