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English definition of “lead”

lead

adjective [before noun]     /liːd/
most important among a group of people , products , etc.: a lead company/product The company's lead product for lung and certain blood cancers is in Phase II trials in humans . The lead negotiator for the teachers ' union said he wasn't surprised by the vote .play a lead role in sth They have played a lead role in the fast and furious growth of e-commerce .
(Definition of lead adjective from the Cambridge Business English Dictionary © Cambridge University Press)
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