OXFORD 9000
📚 noun • entry_id 13256

alum

/ˈæl.əm/
Meanings (ES + gloss)
alumbre
Any similar double sulphate in which either or both of the potassium and aluminium is wholly or partly replaced by other univalent or tervalent cations.
For similar reasons, aluminium sulphate and alums are used in dyeing cloth.[…]Normally alums are soluble in water and insoluble in alcohols.
With weld and cochineal, which are colouring matters the most sensible to the action of sulphate of iron, the purified alums gave us colours more brilliant, fresh, and in a slight…
Word forms
📚 verb • entry_id 13257

alum

/ˈæl.əm/
Meanings (ES + gloss)
alumbrar
To steep in, or otherwise impregnate with, a solution of alum; to treat with alum.
After drying, the cloth was alumed and finally dyed.
The silk should be boiled at the rate of 20 parts of soap per cent. , and then alumed. The aluming need not be so strong as for the fine crimson
Phrases