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multi-metal
multi-metal adj. 
/ˌməlˌtaɪˈmɛd(ə)l/, /ˌməltəˈmɛd(ə)l/ composed of or involving more than one metal; (Chemistry) composed of a number of metal atoms.
Brit. /ˌmʌltɪˈmɛtl/
, /ˌmʌltɪˈmɛtl/U.S. /ˌməltiˈmɛd(ə)l/
, /ˌməltiˈmɛd(ə)l//ˌməlˌtaɪˈmɛd(ə)l//ˌməltəˈmɛd(ə)l/ΚΠ
1964 J. S. Webb et al. Regional Geochem. Reconnaissance in Namwala Concession area, Zambia 2 Our researches..were extended in 1957 to determine the feasibility of multi-metal stream sediment analysis as a basis for regional geochemical survey.
1975 Nature 3 Jan. 8/2 The fact that nitrogenase contains a large number of metal ions lends some credence to the view that a multi-metal centre is responsible for reduction.
1997 J. Williams Money iii. 80/2 The next step was the revival of gold coinage and the creation of a multi-metallic system (gold, silver and often base silver) covering a range of denominations.
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