Alum ( noun , verb )

(As a noun)

Alum ( noun )

1. A double sulfate of aluminum and a trivalent metal (such as potassium, sodium, or ammonium): used in the manufacture of baking powder, ceramics, and as an astringent in medicine.
2. A white crystalline compound, aluminum potassium sulfate, used in medicine as an astringent and styptic.

Origin:

Late middle english: from old french alun, from latin alumen, from greek als "bitter salt", from an indo-european root shared by salt.

Examples:

1. Alum is used to treat minor burns and cuts.
2. He adds alum to the water before he begins dyeing the fabric.
3. The alum crystals were dissolved in water to create a solution.
4. The alum solution was used to fix the dye in the fabric.
5. The alum powder is used as a fixative in the paper making process.

(As a verb)

Alum ( verb )

1. A double sulfate of aluminum and a trivalent metal (such as potassium, sodium, or ammonium): used in the manufacture of baking powder, ceramics, and as an astringent in medicine.
2. A white crystalline compound, aluminum potassium sulfate, used in medicine as an astringent and styptic.

Origin:

Late middle english: from old french alun, from latin alumen, from greek als "bitter salt", from an indo-european root shared by salt.

Examples:

1. Alum is used to treat minor burns and cuts.
2. He adds alum to the water before he begins dyeing the fabric.
3. The alum crystals were dissolved in water to create a solution.
4. The alum solution was used to fix the dye in the fabric.
5. The alum powder is used as a fixative in the paper making process.