Meaning of “conductor” in the English Dictionary

"conductor" in American English

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conductornoun [ C ]

us /kənˈdʌk·tər/

a person who is in charge on a train or other public vehicle and also sells or checks tickets

conductor noun [ C ] (MUSIC)

a person who directs the performance of musicians or a piece of music, esp. by an orchestra:

He’s the conductor of the Toronto Symphony.

conductor noun [ C ] (ALLOWING THROUGH)

physics, chemistry a substance that conducts electricity or heat

(Definition of “conductor” from the Cambridge Academic Content Dictionary © Cambridge University Press)