conductor

American  

[kuhn-duhk-ter] / kənˈdʌk tər /

noun

1. a person who conducts; a leader, guide, director, or manager.

2. an employee on a bus, train, or other public conveyance, who is in charge of the conveyance and its passengers, collects fares or tickets, etc.

3. a person who directs an orchestra or chorus, communicating a specific interpretation of the music to the performers by motions of a baton or the hands

4. a substance, body, or device that readily conducts heat, electricity, sound, etc..

   Copper is a good conductor of electricity.

5. lightning rod.

---

conductor British  

/ kənˈdʌktə, kənˈdʌktrɪs /

noun

1. an official on a bus who collects fares, checks tickets, etc

2. Also called (esp US): director.  a person who conducts an orchestra, choir, etc

3. a person who leads or guides

4. a railway official in charge of a train

5. a substance, body, or system that conducts electricity, heat, etc

6. See lightning conductor

---

conductor Scientific  

/ kən-dŭk′tər /

1. A material or an object that conducts heat, electricity, light, or sound. Electrical conductors contain electric charges (usually electrons) that are relatively free to move through the material; a voltage applied across the conductor therefore creates an electric current. Insulators (electrical nonconductors) contain no charges that move when subject to a voltage.

2. Compare insulator See also resistance superconductivity

---

conductor Cultural  

1. A material through which electric current (see also current) can pass. In general, metals are good conductors. Copper or aluminum is normally used to conduct electricity in commercial and household systems. (Compare insulator.)

---

Other Word Forms

• conductorial
  adjective
• conductorship
  noun
• conductress
  noun
• multiconductor
  adjective
• preconductor
  noun

Etymology

Origin of conductor

First recorded in 1400–50; from Latin ( see conduce, -tor); replacing late Middle English cond(u)itour from Anglo-French, equivalent to Middle French conduiteur from Latin as above; see conduit

Explanation

A train conductor is the person who takes tickets, shouts "All aboard!" and might control the engine, while a musical conductor is the one who leads an orchestra. Same job title — not the same person. From the Latin root conducere, meaning "bring together," a conductor does just that. A music conductor makes sure all the musicians come in at the right time and tempo, and a train conductor brings together all of the passengers. Another type of conductor is something that passes on electricity or heat, like a metal spoon, a conductor of heat when left in a pot that's simmering on the stove.

Example Sentences

Candidates interviewing with Conductor can expect to be tested on their ability to solve sample problems using AI.

From The Wall Street Journal • Feb. 25, 2026

Appeared in the November 4, 2025, print edition as 'Comedy’s Conductor'.

From The Wall Street Journal • Nov. 3, 2025

Conductor Sir Simon Rattle spoke of her as a "flying hermit", always in orbit and only occasionally visiting Earth.

From BBC • Mar. 14, 2025

The vinyl release, which helped the track get Conductor Williams’ attention, seemed fitting given that every other part of Luciano’s work is steeped in an appreciation of all things vintage.

From Seattle Times • Oct. 31, 2023

The authors have duplicated their success with 'The Lightning Conductor.'

From That Affair at Elizabeth by Stevenson, Burton Egbert

Related Words

• director
• maestro
• manager
• master
• supervisor