metallochromicadj.

Brit.

/ˌmɛtələ(ʊ)ˈkrəʊmɪk/, U.S.

/ˌmɛdl̩oʊˈkroʊmɪk/; see also metallo- comb. form.

Origin: Formed within English, by compounding. Etymons: metallo- comb. form, -chromic comb. form.

Etymology: < metallo- comb. form + -chromic comb. form (see quot. 1957).

Biochemistry.

Of, relating to, or designating a dye or stain that exhibits a diagnostic colour change when forming a complex with specific metal ions.

ΚΠ

1957 J. Körbl & R. Přibil in Coll. Czechoslovak Chem. Comm. 22 1123 The most important metal indicators..are organic dyes capable of forming complexes with metals, the formation of such complexes being attended by a change in colour... In the sequel we propose to call them ‘metallochromic’ indicators.

1965 Talanta 12 431 Metallochromic indicators of the complexan-type are in aqueous solutions present, depending on the pH, as anions whose charge may vary from one to six.

1986 Jrnl. Physiol. 377 89 Fibre absorbance was measured in resting fibres both in the absence and in the presence of one of three metallochromic dyes: Arsenazo III, Antipyrylazo III and Azol.

1998 Jrnl. Plant Physiol. 153 610 Ca²⁺ uptake was recorded with the use of the metallochromic Ca²⁺ indicator arsenazo III added to the incubation medium.

This is a new entry (OED Third Edition, December 2001; most recently modified version published online March 2022).

单词	metallochromic
释义	metallochromicadj. Brit. /ˌmɛtələ(ʊ)ˈkrəʊmɪk/, U.S. /ˌmɛdl̩oʊˈkroʊmɪk/; see also metallo- comb. form. Origin: Formed within English, by compounding. Etymons: metallo- comb. form, -chromic comb. form. Etymology: < metallo- comb. form + -chromic comb. form (see quot. 1957). Biochemistry. Of, relating to, or designating a dye or stain that exhibits a diagnostic colour change when forming a complex with specific metal ions. ΚΠ 1957 J. Körbl & R. Přibil in Coll. Czechoslovak Chem. Comm. 22 1123 The most important metal indicators..are organic dyes capable of forming complexes with metals, the formation of such complexes being attended by a change in colour... In the sequel we propose to call them ‘metallochromic’ indicators. 1965 Talanta 12 431 Metallochromic indicators of the complexan-type are in aqueous solutions present, depending on the pH, as anions whose charge may vary from one to six. 1986 Jrnl. Physiol. 377 89 Fibre absorbance was measured in resting fibres both in the absence and in the presence of one of three metallochromic dyes: Arsenazo III, Antipyrylazo III and Azol. 1998 Jrnl. Plant Physiol. 153 610 Ca²⁺ uptake was recorded with the use of the metallochromic Ca²⁺ indicator arsenazo III added to the incubation medium. This is a new entry (OED Third Edition, December 2001; most recently modified version published online March 2022). < adj.1957
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