Look up matrix in Wiktionary, the free dictionary.

A matrix is used to describe an array or grid. An archaic usage is a breeding animal or a womb.

Matrix may refer to:

[edit] Science and mathematics

• Matrix (mathematics), a mathematical object generally represented as an array of numbers
  • Matrix calculus, a notation for calculus operations on matrix spaces
  • Identity matrix
  • Similarity matrix, which scores the similarity between two data points
  • A number of bioinformatical matrices, including:
    • Position-specific scoring matrix, which represents a pattern or motif in biological sequences
    • Substitution matrix, which estimates the rate at which each possible residue in a biological sequence changes to each other residue over time
    • PAM matrix, or Point Accepted Mutation matrix, used in scoring sequence alignments
    • BLOSUM (BLOcks of Amino Acid SUbstitution Matrix), also used in scoring sequence alignments
• Matrix (biology), with numerous meanings, often referring to a biological material where specialized structures are formed or embedded
  • Extracellular matrix, any material part of a tissue that is not part of any cell
  • Mitochondrial matrix, the inner part of a mitochondrion, where the Krebs cycle takes place
  • Osteon or bone matrix, a form of connective tissue found in bone
  • Nuclear matrix, an insoluble fraction of the cell nucleus
  • Germinal matrix, an embryonic brain tissue
  • Matrix, another term for a bacterial growth medium
• Matrix (archaeology), the soil or sediment surrounding a dig site
  • Harris matrix, an archaeological tool used to describe sediment deposition over time
• Matrix (chemical analysis), the discarded portion of a sample used for chemical analysis
• Matrix (geology), the fine grains between larger grains in igneous or sedimentary rocks
• Matrix isolation, a continuous solid phase in which particles (precipitates, etc.) are embedded
• Metal matrix composite, a type of composite material

[edit] Technology

• Multistate Anti-Terrorism Information Exchange (MATRIX), a database of US Citizens
• Matrix (numismatics), an intermediate into which the design of a coin is engraved
• Matrix (printing), a mold for shaping the letters
• Dot matrix, an outdated printer type or display
• Matrix decoder, a technology which allows a finite number of audio channels to be decoded to a greater amount of audio channels (i.e. Dolby or Quadraphonic)
• Matrix (or matrix master), a disc in the early stages of processing a record for mass production
• Matrix Switch, a crossbar switch connecting multiple inputs to multiple outputs
• Keyboard matrix (music), a device which reduces the number of wires needed for a keyboard

[edit] Arts and entertainment

• Matrix (music), an element of variations which does not change, especially in folk and popular music
• Matrix (Doctor Who), an advanced computer network and a virtual reality environment from the British television series Doctor Who
• M@rix (pronounced Matrix) the 1997 album by the German band P.A.L.
• The Matrix, a 1999 science fiction/action film
• The Matrix Reloaded, a 2003 science fiction/action film
• The Matrix Revolutions, a 2003 science fiction/action film

[edit] Other

• Matrix management, an organizational management style
• Growth-share matrix, a Boston Consulting Group analysis technique for business strategy
• Matrix Season, a rugby union season
• Matrix sign, a variable-message sign on roads in the UK
• Toyota Matrix, a compact hatchback car manufactured by Toyota

[edit] See also

• Matrix (name) (disambiguation)
• Array (disambiguation)
• Grid (disambiguation)

This disambiguation page lists articles associated with the same title. If an internal link led you here, you may wish to change the link to point directly to the intended article.