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[pluhm-buh s] /ˈplʌm bəs/

adjective, Chemistry.
containing bivalent lead.
of or containing lead in the divalent state

1680s, “leaden;” 1854 in chemistry sense, “containing lead” (especially in a low valence), from Latin plumbosus “full of lead,” from plumbum (see plumb (n.)).


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