conductor
noun
con·duc·tor
kən-ˈdək-tər 
: one that conducts: such as
a
: guide
b
: a collector of fares in a public conveyance
a railroad conductor
c
: the leader of a musical ensemble
an orchestra conductor
d(1)
: a material or object that permits an electric current to flow easily
Copper wire is a good conductor.
compare insulator, semiconductor
(2)
: a material capable of transmitting another form of energy (such as heat or sound)
Aluminum is a conductor of heat.
Examples of conductor in a Sentence
Metal is a good conductor of electricity.
Recent Examples on the Web
Upon arrival, Geneva officers met with the train conductor and found the man who had been hit near the Union Pacific-West railway tracks west of the Western Avenue grade crossing, the department said, west of the Geneva Metra station.
—
Molly Morrow, Chicago Tribune, 2 Apr. 2026
Despite tough competition from British entrant Olivia Newton-John, ABBA’s spangly outfits and wild theatricality (including their conductor appearing in full Napoleonic regalia) stole the show.
—Encyclopedia Britannica, 2 Apr. 2026
Assistant conductor Anthony Cabrera and ensemble administrator Ginny McCulloh of the Gay Men’s Chorus of South Florida shared a similar sentiment.
—Amanda Rosa, Miami Herald, 1 Apr. 2026
While some people filmed the incident, CTA said people should have called the police or alerted the train conductor when a man decided to put his life at risk.
—Jermont Terry, CBS News, 31 Mar. 2026
See All Example Sentences for conductor
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Molly Morrow, Chicago Tribune, 2 Apr. 2026
Despite tough competition from British entrant Olivia Newton-John, ABBA’s spangly outfits and wild theatricality (including their conductor appearing in full Napoleonic regalia) stole the show.
—Encyclopedia Britannica, 2 Apr. 2026
Assistant conductor Anthony Cabrera and ensemble administrator Ginny McCulloh of the Gay Men’s Chorus of South Florida shared a similar sentiment.
—Amanda Rosa, Miami Herald, 1 Apr. 2026
While some people filmed the incident, CTA said people should have called the police or alerted the train conductor when a man decided to put his life at risk.
—Jermont Terry, CBS News, 31 Mar. 2026
See All Example Sentences for conductor
Cite this Entry
“Conductor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/conductor. Accessed 8 Apr. 2026.
Copy CitationKids Definition
conductor
noun
con·duc·tor
kən-ˈdək-tər
1
: a person who collects fares in a public means of transportation (as a bus or railroad train)
2
: the leader of a musical group
3
: a substance or body that can allow electricity, heat, or sound to pass through it
Medical Definition
conductor
noun
con·duc·tor
kən-ˈdək-tər
1
a
: a material or object that permits an electric current to flow easily
b
: a material capable of transmitting another form of energy (as heat or sound)
2
: a bodily part (as a nerve fiber) that transmits excitation
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