Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of alum is as below...

Pargasite :: Pargasite (n.) A dark green aluminous variety of amphibole, or hornblende..

Alumna :: Alumna (n. fem.) A female pupil; especially, a graduate of a school or college..

Asperse :: Asperse (v. t.) To bespatter with foul reports or false and injurious charges; to tarnish in point of reputation or good name; to slander or calumniate; as, to asperse a poet or his writings; to asperse a man's character..

Hornblende :: Hornblende (n.) The common black, or dark green or brown, variety of amphibole. (See Amphibole.) It belongs to the aluminous division of the species, and is also characterized by its containing considerable iron. Also used as a general term to include the whole species..

Defamatory :: Defamatory (a.) Containing defamation; injurious to reputation; calumnious; slanderous; as, defamatory words; defamatory writings..

Alum :: Alum (v. t.) To steep in, or otherwise impregnate with, a solution of alum; to treat with alum..

Petalite :: Petalite (n.) A rare mineral, occurring crystallized and in cleavable masses, usually white, or nearly so, in color. It is a silicate of aluminia and lithia..

Wadd :: Wadd (n.) An earthy oxide of manganese, or mixture of different oxides and water, with some oxide of iron, and often silica, alumina, lime, or baryta; black ocher. There are several varieties..

Calumniation :: Calumniation (n.) False accusation of crime or offense, or a malicious and false representation of the words or actions of another, with a view to injure his good name..

Aluminiform :: Aluminiform (a.) Having the form of alumina.

Dogger :: Dogger (n.) A sort of stone, found in the mines with the true alum rock, chiefly of silica and iron..

Alum Stone :: Alum stone () A subsulphate of alumina and potash; alunite.

Calumbin :: Calumbin (n.) A bitter principle extracted as a white crystalline substance from the calumba root.

Wootz :: Wootz (n.) A species of steel imported from the East Indies, valued for making edge tools; Indian steel. It has in combination a minute portion of alumina and silica..

Axinite :: Axinite (n.) A borosilicate of alumina, iron, and lime, commonly found in glassy, brown crystals with acute edges..

Variscite :: Variscite (n.) An apple-green mineral occurring in reniform masses. It is a hydrous phosphate of alumina.

Zunyite :: Zunyite (n.) A fluosilicate of alumina occurring in tetrahedral crystals at the Zu/i mine in Colorado.

Santalaceous :: Santalaceous (a.) Of or pertaining to a natural order of plants (Santalaceae), of which the genus Santalum is the type, and which includes the buffalo nut and a few other North American plants, and many peculiar plants of the southern hemisphere..

Turquois :: Turquois (n.) A hydrous phosphate of alumina containing a little copper; calaite. It has a blue, or bluish green, color, and usually occurs in reniform masses with a botryoidal surface..

Pimelite :: Pimelite (n.) An apple-green mineral having a greasy feel. It is a hydrous silicate of nickel, magnesia, aluminia, and iron..

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