Medium

Medium may refer to:

Communication

• Medium (communication), storage and/or transmission tools used to store and deliver information or data
• Transmission medium, in physics and telecommunications, any material substance which can propagate waves or energy
  • Optical medium, material through which electromagnetic waves propagate
• Medium of instruction, any language or other tools used to educate, train, or instruct

Natural science

• Processing medium, in industrial engineering, a material that plays a role in manufacturing processes
• Excitable medium, a nonlinear dynamic system which has the capacity to propagate a wave
• Gain medium, a quantum system that allows amplification of power (gain) of waves passing through (usually by stimulated emission)
• Growth medium (or culture medium), in biotechnology, an object in which microorganisms or cells experience growth
• Interplanetary medium, in astronomy, material which fills the solar system
• Interstellar medium, in astronomy, the matter and energy content that exists between the stars within a galaxy
• Porous medium, in engineering and earth sciences, a material that allows fluid to pass through it, such as sand

Entertainment

• Artistic medium
• The Medium, an opera by Gian-Carlo Menotti
  • The Medium (1951 film), a film version of the opera directed by Menotti
• The Medium (1992 film), an English film from Singapore
• Medium (TV series), a television series about a research medium for a district attorney's office

Other

• Medium (spirituality), a practice in which a person claims to be an intermediary between the physical world and the spiritual world
• Medium Productions, a record label
• The Medium (Rutgers), an entertainment weekly at Rutgers
• Medium (company)

See also

• Media (disambiguation)