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Made hard, or compact; made unfeeling or callous; made obstinate or obdurate; confirmed in error or vice.

Having the surface hardened, as iron tools.

unwilling to understand or judge; as, authors are blind to their own defects. But hard be hardened, blind be blinded more, That they may stumble on, and deeper fall. Milton.

Hard to impress or penetrate. [R.] I find my heart hardened and blunt to new impressions. Pope.

A substance composed of ground bone, mineral matters, etc., hardened by pressure, and used for making billiard balls, boxes, etc.

Consumed with, or as with, fire; scorched or dried, as with fire or heat; baked or hardened in the fire or the sun. Burnt ear, a black, powdery fungus which destroys grain. See Smut. -- Burnt offering, something offered and burnt on an altar, as an atonement for sin; a sacrifice. The offerings of the Jews were a clean…

Furnished with protuberant or hardened spots.

Hardened in mind; insensible; unfeeling; unsusceptible. "The callous diplomatist." Macaulay. It is an immense blessing to be perfectly callous to ridicule. T. Arnold.

The hardened part of a casting, as the tread of a car wheel. Knight. Chill and fever, fever and ague.

Hardened on the surface or edge by chilling; as, chilled iron; a chilled wheel.

A photomechanical print made directly from a hardened film of gelatin or other colloid; also, the process of making such prints. According to one method, the film is sensitized with potassium dichromate and exposed to light under a reversed negative. After the dichromate has been washed out, the film is soaked in glyce…

which the evacuations are infrequent and difficult, or the intestines become filled with hardened faces; costiveness.

Salted codfish hardened by pressure. Kane.

debauched by ambition. Burke. A man must have got his conscience thoroughly debauched and hardened before he can arrive to the height of sin. South. Her pride debauched her judgment and her eyes. Cowley.

A perforated block, commonly of hardened steel used in connection with a punch, for punching holes, as through plates, or blanks from plates, or for forming cups or capsules, as from sheet metal, by drawing.

A hardened steel plate having a hole, or a gradation of conical holes, through which wires are drawn to be reduced and elongated.

The hardened parts of the external integument of an animal, including hair, feathers, nails, horns, scales, etc.,as well as the armor of armadillos and many reptiles, and the shells or hardened integument of numerous invertebrates; external skeleton; dermoskeleton.

d by cold; to be changed from a liquid to a solid state by the abstraction of heat; to be hardened into ice or a like solid body.

ecially, of boldness of disposition, sometimes of impudence; seeming; as, a bold front; a hardened front. With smiling fronts encountering. Shak. The inhabitants showed a bold front. Macaulay.

An impure resin of turpentine, hardened on the outside of pine trees by the spontaneous evaporation of its essential oil. When purified, it is called yellow pitch, white pitch, or Burgundy pitch.