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Webster 1913 Edition


Zaffer

Zaf′fer

,
Noun.
[F.
zafre
,
safre
; cf. Sp.
zafra
,
safra
, It.
saffera
, G.
zaffer
; all probably of Arabic origin. Cf.
Zaphara
.]
A pigment obtained, usually by roasting cobalt glance with sand or quartz, as a dark earthy powder. It consists of crude cobalt oxide, or of an impure cobalt arseniate. It is used in porcelain painting, and in enameling pottery, to produce a blue color, and is often confounded with smalt, from which, however, it is distinct, as it contains no potash. The name is often loosely applied to mixtures of zaffer proper with silica, or oxides of iron, manganese, etc.
[Written also
zaffre
, and formerly
zaffree
,
zaffar
,
zaffir
.]

Webster 1828 Edition


Zaffer

ZAFFER

,
Noun.
The residuum of cobalt, after the sulphur, arsenic and other volatile matters have been expelled by calcination; so that it is a gray or dark gray oxyd of cobalt, mixed with a portion of silex.

Definition 2021


zaffer

zaffer

English

Noun

zaffer (countable and uncountable, plural zaffers)

  1. Alternative form of zaffre

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