Mathematics and science

• Parallel (latitude), an imaginary east-west line circling a globe
• Parallel circuits, as opposed to series
• Parallel (geometry)
  Parallel (geometry)
  Parallelism is a term in geometry and in everyday life that refers to a property in Euclidean space of two or more lines or planes, or a combination of these. The assumed existence and properties of parallel lines are the basis of Euclid's parallel postulate. Two lines in a plane that do not...
  
  
• Parallel evolution
  Parallel evolution
  Parallel evolution is the development of a similar trait in related, but distinct, species descending from the same ancestor, but from different clades.-Parallel vs...
  
  
• Parallel transport
  Parallel transport
  In geometry, parallel transport is a way of transporting geometrical data along smooth curves in a manifold. If the manifold is equipped with an affine connection , then this connection allows one to transport vectors of the manifold along curves so that they stay parallel with respect to the...
  
  
• Parallel of declination
  Declination
  In astronomy, declination is one of the two coordinates of the equatorial coordinate system, the other being either right ascension or hour angle. Declination in astronomy is comparable to geographic latitude, but projected onto the celestial sphere. Declination is measured in degrees north and...
  
  , used in astronomy
  Astronomy
  Astronomy is a natural science that deals with the study of celestial objects and phenomena that originate outside the atmosphere of Earth...
  
  

Computing

• Parallel algorithm
  Parallel algorithm
  In computer science, a parallel algorithm or concurrent algorithm, as opposed to a traditional sequential algorithm, is an algorithm which can be executed a piece at a time on many different processing devices, and then put back together again at the end to get the correct result.Some algorithms...
  
  
• Parallel computing
  Parallel computing
  Parallel computing is a form of computation in which many calculations are carried out simultaneously, operating on the principle that large problems can often be divided into smaller ones, which are then solved concurrently . There are several different forms of parallel computing: bit-level,...
  
  
• Parallel metaheuristic
  Parallel metaheuristic
  Parallel metaheuristic is a class of new advanced techniques that are able of reducing both the numerical effort and the run time of a metaheuristic. To this end, concepts and technologies from the field of parallelism in computer science are used to enhance and even completely modify the behavior...
  
  
• Parallel (software)
  Parallel (software)
  GNU parallel is a command-line driven utility for Linux or other Unix-like operating systems which allows the user to execute shell scripts in parallel. GNU parallel is a free software, written in Perl...
  
  , a UNIX utility for running programs in parallel
• Parallel Sysplex
  Parallel Sysplex
  In computing, a Parallel Sysplex is a cluster of IBM mainframes acting together as a single system image with z/OS. Used for disaster recovery, Parallel Sysplex combines data sharing and parallel computing to allow a cluster of up to 32 systems to share a workload for high performance and high...
  
  , a cluster of IBM mainframes
• Parallel communication
• Parallel port
  Parallel port
  A parallel port is a type of interface found on computers for connecting various peripherals. In computing, a parallel port is a parallel communication physical interface. It is also known as a printer port or Centronics port...
  
  
• Parallel ATA

Music and entertainment

• Parallel (manga)
  Parallel (manga)
  is a Japanese shōnen manga by Toshihiko Kobayashi. It tells the story of two high school students, Shinnosuke Nekota and Sakura Hoshino, who are forced to live together in the same house when their parents become unofficially engaged and leave the country for their work...
  
  , a shōnen manga by Toshihiko Kobayashi
• Parallel (video)
  Parallel (video)
  Parallel is a video feature compiling all of R.E.M.'s Automatic for the People and Monster-era promotional videos, as well as several recorded for this release alone...
  
  , a video album by R.E.M.
  R.E.M.
  R.E.M. was an American rock band formed in Athens, Georgia, in 1980 by singer Michael Stipe, guitarist Peter Buck, bassist Mike Mills and drummer Bill Berry. One of the first popular alternative rock bands, R.E.M. gained early attention due to Buck's ringing, arpeggiated guitar style and Stipe's...
  
  
• "The Parallel
  The Parallel
  "The Parallel" is an episode of the American television anthology series The Twilight Zone.-Synopsis:An astronaut, Major Robert Gaines, is orbiting the Earth in his space capsule. However, at one point the systems malfunction and he blacks out, waking up on Earth...
  
  ", an episode of The Twilight Zone
• Parallel 9
  Parallel 9
  Parallel 9 was a British children's television entertainment show that broadcast from 1992 to 1994. A total of three series - one in each year - was produced, and each series ran for up to twenty-two weeks Parallel 9 (commonly known as 'P9') was a British children's television entertainment show...
  
  , a British children's television show
• "Parallel", the fourth track on Bad Religion's 1996 album The Gray Race
  The Gray Race
  The Gray Race is the ninth full-length album of the punk rock band Bad Religion, which was released in 1996. It was the follow-up to the band's highly successful 1994 album Stranger Than Fiction...
  
  

Music terminology

• Parallel fifths
  Consecutive fifths
  In music, consecutive fifths are progressions in which a perfect fifth is followed by a different perfect fifth between the same two musical parts : for example, from C to D in one part along with G to A in a higher part...
  
  , the concurrence of successive intervals of a perfect fifth between two voices
• Parallel harmony, also known as "harmonic planing" or "parallel voice leading"
• Parallel key
  Parallel key
  In music, parallel keys are the major and minor scales that have the same tonic. A major and minor scale sharing the same tonic are said to be in a parallel relationship...
  
  , the minor (or major) key of a major (or minor) key with the same tonic
• Parallel chord

Other uses

• Avenida del Paralelo, one of the main streets of Barcelona
• Parallel cousin
  Parallel cousin
  In discussing consanguineal kinship in anthropology, a parallel cousin is a cousin from a parent's same sex sibling, while a cross cousin is from a parent's opposite-sexed sibling...
  
  
• Parallelism (grammar)
  Parallelism (grammar)
  In grammar, parallelism is a balance of two or more similar words, phrases, or clauses. The application of parallelism in sentence construction can sometimes improve writing style clearness and readability. Parallelism may also be known as parallel structure or parallel construction...
  
  , a balance of two or more similar words, phrases, or clauses
• Parallelism (rhetoric)
  Parallelism (rhetoric)
  Parallelism means giving two or more parts of the sentences a similar form so as to give the whole a definite pattern.Parallelisms of various sorts are the chief rhetorical device of Biblical poetry in Hebrew. In fact, Robert Lowth coined the term "parallelismus membrorum Parallelism means giving...