Conductor or conduction may refer to:

Biology and medicine

Bone conduction Bone conduction is the conduction of sound to the inner ear primarily through the bones of the skull, allowing the hearer to perceive audio content even if the ear canal is blocked. Bone conduction transmission occurs constantly as sound waves vi ...

, the conduction of sound to the inner ear *

Conduction aphasia Conduction aphasia, also called associative aphasia, is an uncommon form of aphasia caused by damage to the parietal lobe of the brain. An acquired language disorder, it is characterized by intact auditory comprehension, coherent (yet paraphasi ...

, a language disorder

Mathematics

Conductor (ring theory) In ring theory, a branch of mathematics, the conductor is a measurement of how far apart a commutative ring and an extension ring are. Most often, the larger ring is a domain integrally closed in its field of fractions, and then the conducto ...

* Conductor of an abelian variety * Conductor of a

Dirichlet character In analytic number theory and related branches of mathematics, a complex-valued arithmetic function \chi: \mathbb\rightarrow\mathbb is a Dirichlet character of modulus m (where m is a positive integer) if for all integers a and b: # \chi(ab) = \ch ...

Conductor (class field theory) In algebraic number theory, the conductor of a finite abelian extension of local or global fields provides a quantitative measure of the ramification in the extension. The definition of the conductor is related to the Artin map. Local conducto ...

Artin conductor In mathematics, the Artin conductor is a number or ideal associated to a character of a Galois group of a local or global field, introduced by as an expression appearing in the functional equation of an Artin L-function. Local Artin conductors ...

, of a Galois group * Conductor of a

Numerical semigroup In mathematics, a numerical semigroup is a special kind of a semigroup. Its underlying set is the set of all nonnegative integers except a finite number of integers and the binary operation is the operation of addition of integers. Also, the integ ...

Music

Conductor (music) Conducting is the art of directing a musical performance, such as an orchestral or Choir, choral concert. It has been defined as "the art of directing the simultaneous performance of several players or singers by the use of gesture." The primary d ...

, a person who leads a musical ensemble * ''Conductor'' (album), an album by The Comas * Conductor Williams (born 1982), American music producer * Conduction, the musical improvisation method of

Butch Morris Lawrence Douglas "Butch" Morris (February 10, 1947 – January 29, 2013) was an American cornetist, composer and conductor. He was known for pioneering his structural improvisation method, ''Conduction'', which he utilized on many recordings. ...

Physics

Electrical conductor In physics and electrical engineering, a conductor is an object or type of material that allows the flow of charge (electric current) in one or more directions. Materials made of metal are common electrical conductors. The flow of negatively c ...

Electrical resistivity and conductivity Electrical resistivity (also called volume resistivity or specific electrical resistance) is a fundamental specific property of a material that measures its electrical resistance or how strongly it resists electric current. A low resistivity in ...

Electrical resistance and conductance The electrical resistance of an object is a measure of its opposition to the flow of electric current. Its Multiplicative inverse, reciprocal quantity is , measuring the ease with which an electric current passes. Electrical resistance share ...

** Fast-ion conductor ** Mixed conductor, ionic and electronic **

Electrical conduction system of the heart The cardiac conduction system (CCS, also called the electrical conduction system of the heart) transmits the Cardiac action potential, signals generated by the sinoatrial node – the heart's Cardiac pacemaker, pacemaker, to cause the heart musc ...

Thermal conduction Thermal conduction is the diffusion of thermal energy (heat) within one material or between materials in contact. The higher temperature object has molecules with more kinetic energy; collisions between molecules distributes this kinetic energy ...

Thermal conductivity The thermal conductivity of a material is a measure of its ability to heat conduction, conduct heat. It is commonly denoted by k, \lambda, or \kappa and is measured in W·m−1·K−1. Heat transfer occurs at a lower rate in materials of low ...

Transport

Bus conductor A bus conductor (also referred to as a conductor or clippie) is a person (other than the driver) responsible for collecting fares from bus passengers and issues tickets to passengers. Bus conductors may also be responsible for helping passenger ...

, checking tickets *

Conductor (rail) A conductor (North American English) or guard (Commonwealth English) is a train crew member responsible for operational and safety duties that do not involve actual operation of the train/locomotive. The role is common worldwide under various j ...

, on a train *

Conductor (underground railroad) The Underground Railroad was an organized network of secret routes and safe houses used by Fugitive slaves in the United States, freedom seekers to escape to the slavery in the United States#Abolitionism in the North, abolitionist Northern Un ...

, freeing slaves

Other uses

* Mr. Conductor, a character in ''

Shining Time Station ''Shining Time Station'' is a children's television series jointly created by British television producer Britt Allcroft and American television producer Rick Siggelkow. The series was produced by Quality Family Entertainment (the American bran ...

'' and ''

Thomas and the Magic Railroad ''Thomas and the Magic Railroad'' is a 2000 children's fantasy adventure film written and directed by Britt Allcroft and produced by Allcroft and Phil Fehrle; the cast includes Alec Baldwin, Peter Fonda, Mara Wilson, Didi Conn, Russell Mean ...

'' *

Conductor (architecture) A rain gutter, eavestrough, eaves-shoot or surface water collection channel is a component of a water discharge system for a building. It is necessary to prevent water dripping or flowing off roofs in an uncontrolled manner for several reason ...

, a downspout *

Conductor (company) Conductor, founded in 2006, started as a marketing services company. In 2010, it launched its cloud-based software platform called Conductor Searchlight, which supports search engine optimization (SEO) and content marketing. The platform also off ...

, search engine optimisation company, New York City, US *

Conductor (military appointment) Conductor (Cdr) is an appointment held by a few selected warrant officers class 1 in the Royal Logistic Corps and is one of the most senior appointments that can be held by a warrant officer in the British Army. Previously conductor was the m ...

, UK warrant officer *

Conductor (software) Conductor is a free and open-source microservice orchestration software platform originally developed by Netflix Netflix is an American subscription video on-demand over-the-top streaming service. The service primarily distributes or ...

, microservice orchestration * ''The Conductor'' (film), by Pavel Lungin, Russia, 2012 * Part of the

palpal bulb The two palpal bulbs – also known as palpal organs and genital bulbs – are the copulatory organs of a male spider. They are borne on the last segment of the pedipalps (the front "limbs" of a spider), giving the spider an appearance often descr ...

of male spiders * ''

The Orchestra Conductor ''The Orchestra Conductor'' (, and also known as ''The Conductor'') is a 1980 Polish drama film directed by Andrzej Wajda. It was entered into the 30th Berlin International Film Festival, where Andrzej Seweryn won the Silver Bear for Best Acto ...

'', a 1980 Polish film by Andrzej Wajda * Teacher in conductive pedagogy {{Disambiguation