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Look up in Wiktionary, the free dictionary.circuit |

* Circuit* may mean:

- Circuit theory, the theory of accomplishing work by routing electrons, gas, fluids, or other matter through loops (e.g., electrical, hydraulic or pneumatic circuits)

Further information: Hydraulic analogy and Fluidics

In **electrical engineering**

- Electrical circuit, an electrical network that has a closed loop giving a return path for the current
- Circuit analysis, the process of finding the voltages across, and the currents through, every component in an electrical circuit
- Electronic circuit, active electronic components connected in a circuit
- Analog circuit or Digital circuit
- Integrated circuit
- Asynchronous circuit or Synchronous circuit
- Printed circuit board (PCB)
- Series and parallel circuits
- Telecommunication circuit
- Circuit diagram
- Balanced circuit
- LC circuit

In **fluid power** and **fluid mechanics**

In **physics**

- Magnetic circuit, one or more closed loop paths containing a magnetic flux

In **mathematics** and **computer science**

- Circuit (computer theory), a theoretical structure simulating electrical and data paths
- Boolean circuit
- Integer circuit, a mathematical object of computational complexity

- Circuit complexity, a branch of computational complexity theory
- Cycle (graph theory), a closed path, with no other repeated vertices than the starting and ending vertices
- Matroid circuit, in combinatorics

In **neuroscience**

- Biological neural network, a neuronal circuit

In **economics**

- Monetary circuit theory, a heterodox theory of monetary economics; also called
*circuitism*

In **government** and **law**

- Circuit (administrative division), an administrative country subdivision in East Asia
- Circuit court, the name of court systems in several common law jurisdictions

In **transportation** and **racing**

- Circuit (airfield), also called the pattern, a standard path followed by aircraft when taking off or landing
- Kart circuit
- Formula One circuits (see List of Formula One circuits)
- Race track

Others

- "Circuit", a character from the
*Munna Bhai*film series - Circuit (LCMS), local grouping of congregations in the Lutheran Church - Missouri Synod
*Circuit*(film), a 2001 gay-themed film set in the world of gay circuit parties- Circuit party, a gay dance event
- Methodist Circuit, a church governance in Methodism
*Circuital*, a 2011 album by My Morning Jacket- Circuit training, a form of high-intensity aerobics.

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