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Line, lines or LINE may refer to:

Science and technology[edit]


  • Lineage (evolution), a sequence of species that form a line of descent
  • Inbred line, either of:
    • Inbred strain or linear organisms, model organisms that are nearly genetically identical and are used in laboratories
    • Products of line breeding, a technique in animal and plant agriculture and horticulture
  • Long interspersed nuclear element, a DNA sequence of two non-overlapping reading frames, accounting for 21% of human DNA

Computing and telecommunications[edit]

Health and medicine[edit]

Mathematics and geometry[edit]

  • Line (geometry), a concept which includes, but is not limited to, an infinitely-extended one-dimensional figure with no curvature
  • Line (unit), an obsolete unit of length equal to one-twelfth or one-tenth of an inch


  • Former name of the unit of magnetic flux, the Maxwell


Albums and songs[edit]

Film and television[edit]

Poetry and drama[edit]

Other entertainment[edit]

  • Line (comics), a term to describe a subset of comic book series by a publisher
  • Line (melody), a linear succession of musical tones that the listener perceives as a single entity
  • Line (music) or part, a strand or melody of music played by an individual instrument or voice
  • Line (singer) (born 1996), a Danish singer and finalist in the Danish X Factor
  • The Line (memoir), by Arch and Martin Flanagan


  • Line function, primary business activity that negatively affects income if interrupted
  • Product lining, offering several related products for sale individually




  • Lines, Norway, an island in the municipality of Åfjord in Sør-Trøndelag county, Norway
  • Line Islands, an island group in the central Pacific



  • Airline, a company that provides air transport services for traveling passengers and freight
  • Log-line, in nautical usage, a piece of rope which has been assigned a function
  • Shipping line, a company engaged in sea transport
  • Waterline, the line where the hull of a ship meets the surface of the water
  • Railway line, a railway route or service

Other uses[edit]

See also[edit]