Auxochrome definition

ôksəkrōm
A radical or atom group, as NH2 or OH, needed to bond organic dyes to fabric fibers.
noun
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(obsolete, chemistry) Any atom or group which, when added to a chromophore, causes a bathochromic shift in its spectrum.
noun
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Other Word Forms

Noun

Singular:
auxochrome
Plural:
auxochromes