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 bioinformatic related 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 (archeology), 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• Dot matrix, an outdated printer type or display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
• Matrix soundtrack, one of the two 1999 soundtrack albums from the blockbuster film, The Matrix

[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)

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