Wiktionary
electrochemical series
n. (context chemistry English) a list of the metals in order of their electronegativity, and hence of their reactivity
WordNet
electrochemical series
n. a serial arrangement of metallic elements or ions according to their electrode potentials determined under specified conditions; the order shows the tendency of one metal to reduce the ions of any other metal below it in the series [syn: electromotive series, electromotive force series]