Alum (Noun)
Meaning 1
A double sulphate of aluminum and potassium that is used as an astringent (among other things).
Classification
Nouns denoting man-made objects.
Examples
- The solution contained alum, a colourless crystalline double sulphate of aluminium and potassium, and was used as a medication to treat a range of ailments.
- In the early days of textiles, alum was used extensively as a mordant in dyeing fabrics, particularly in the production of wool and silk.
- Due to its astringent and anti-inflammatory properties, alum crystals were traditionally used in medicine to treat haemorrhoids and gum diseases.
- This astringent styptic or the double sulphate of aluminium and potassium was also applied to minor cuts, nose bleeds, and eye irritations.
- In ancient Rome, alum was highly valued for a host of applications, ranging from winemaking and weaving to medicine, cosmetics, and candle-making.
Hypernyms
Meaning 2
A person who has received a degree from a school (high school or college or university).
Classification
Nouns denoting people.
Synonyms
Hypernyms
Hyponyms
Meaning 3
A white crystalline double sulfate of aluminum: the ammonium double sulfate of aluminum.
Classification
Nouns denoting substances.
Synonyms
Hypernyms
Meaning 4
A white crystalline double sulfate of aluminum: the potassium double sulfate of aluminum.
Classification
Nouns denoting substances.