TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

Roman alum [1 record]

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Alphabetical list of terms

Record 1 2001-09-27

English

Subject field(s)
  • Mineralogy
  • Dyes and Pigments (Industries)
DEF

A cubical potassium alum formerly obtained in large quantities from Italian alunite, and highly valued by dyers on account of its freedom from iron.

CONT

... a quarry for rock alum, used in dyeing wool.

French

Domaine(s)
  • Minéralogie
  • Teintures et pigments (Industries)
DEF

Alun cristallisé en cubes [...] provenant [spécialement] de Tolfa près de Rome.

CONT

Chauffé, [l'alun] fond dans son eau de cristallisation à 91 °C; si on le laisse alors refroidir, il prend un aspect vitreux sous lequel on lui donne le nom d'alun de roche.

CONT

L'alun connu sous le nom d'alun de Rome provient de la carrière de Tolfa [...]

Spanish

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