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having the qualities of adamant; incapable of being broken, dissolved, or penetrated; as, adamantine bonds or chains.

n stone; a mineral occurring in tetragonal crystals of reddish brown color, and brilliant adamantine luster; also massive, sometimes in compact forms with concentric fibrous structure resembling wood (wood tin), also in rolled fragments or pebbly (Stream tin). It is the chief source of metallic tin. See Black tin, unde…

nate; a mineral occurring in colorless, white, or yellowish transparent crystals, with an adamantine, also massive and compact.

fitting the upper part of the body; especially, such a garment worn by men. Let each His adamantine coat gird well. Milton.

riety; the oriental ruby, or red sapphire; the oriental amethyst, or purple sapphire; and adamantine spar, the hair-brown variety. It is the hardest substance found native, next to the diamond.

Adamantine. [Obs.]

nflicted as punishment; used as a means of punishment; as, a penal colony or settlement. "Adamantine chains and penal fire." Milton. Penal code (Law), a code of laws concerning crimes and offenses and their punishment. -- Penal laws, Penal statutes (Law), laws prohibited certain acts, and imposing penalties for commit…

A rare mineral occurring in tetragonal crystals of a white, yellow, or grayish color and adamantine luster. It is a chlorocarbonate of lead.

in rhombohedral crystals or massive, and is of a dark red or black color with a metallic adamantine luster.

A mineral usually of a reddish brown color, and brilliant metallic adamantine luster, occurring in tetragonal crystals. In composition it is titanium dioxide, like octahedrite and brooklite.

face otherwise; as, to turn a wheel or a spindle; to turn the body or the head. Turn the adamantine spindle round. Milton. The monarch turns him to his royal guest. Pope.