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Making hard or harder.

The act or process of converting the surface of iron into steel. Ure.

Designating, or pert. to, any of various steels that harden when heated to above a red heat and cooled in air, usually in a blast of cold air with moderate rapidity, without quenching. Such steels are alloys of iron and carbon with manganese, tungsten and manganese, chromium, molybdenum and manganese, etc. They are chi…

The hardening of a gland.

Abnormal thickening and hardening of the walls of the arteries, esp. of the intima, occurring mostly in old age. -- Ar*te`ri*o*scle*rot"ic (#), a.

The act or process of cooking in an oven, or of drying and hardening by heat or cold.

A hard or thickened spot or protuberance; a hardening and thickening of the skin or bark of a part, eps. as a result of continued pressure or friction.

little nuts of which are covered with a greenish white wax, which was formerly, used for hardening candles; -- also called bayberry tree, bayberry, or candleberry.

A former, commonly cone-shaped, used in hat manufacturing for hardening the soft fiber into a bat.

Dry and hard; impermeable; unyielding. [Obs.] Clay in dry seasons is costive, hardening with the sun and wind. Mortimer.

Face hammer, etc. See under Drop, Face, etc. -- Hammer fish. See Hammerhead. -- Hammer hardening, the process of hardening metal by hammering it when cold. -- Hammer shell (Zoöl.), any species of Malleus, a genus of marine bivalve shells, allied to the pearl oysters, having the wings narrow and elongated, so as to…

A process of hardening the face of steel, as armor plates, invented by Hayward A. Harvey of New Jersey, consisting in the additional carburizing of the face of a piece of low carbon steel by subjecting it to the action of carbon under long-continued pressure at a very high heat, and then to a violent chilling, as by a…

The act of hardening, or the process of growing hard.

large stove or oven; a furnace of brick or stone, or a heated chamber, for the purpose of hardening, burning, or drying anything; as, a kiln for baking or hardening earthen vessels; a kiln for drying grain, meal, lumber, etc.; a kiln for calcining limestone.

A hardening into a stone substance.

A hardening of the heart; hardness of heart. [Obs.]

olic priest; the Roman Catholic Church. -- Roman cement, a cement having the property of hardening under water; a species of hydraulic cement. -- Roman law. See under Law. -- Roman nose, a nose somewhat aquiline. -- Roman ocher, a deep, rich orange color, transparent and durable, used by artists. Ure. -- Roman ord…

lerema neonatorum ( Etym: [NL., of the newborn], an affection characterized by a peculiar hardening and rigidity of the cutaneous and subcutaneous tissues in the newly born. It is usually fatal. Called also skinbound disease.

Induration; hardening; especially, that form of induration produced in an organ by increase of its interstitial connective tissue.

Hence, to prepare by drying or hardening, or removal of natural juices; as, to season timber.