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Medium may refer to:

[edit] General

• Recording medium, a physical material that holds recorded information
• Medium (spirituality), a person who claims to serve as a spiritual intermediary
• Medium of instruction, the language or other tools used to educate, train, or instruct
• Medium of exchange, a monetary instrument used to pay for goods and/or services

[edit] Science

In general, a medium is a material that is either itself undergoing a process that is being studied or used (e.g. transmission medium), or enabling another process of interest (e.g. growth medium). Specific examples include the following:

• Processing medium, in industrial engineering, a material that plays a role in manufacturing processes
• Transmission medium, in physics and telecommunications, any material substance which can propagate waves or energy
• Medium (optics), material through which waves propagate
• Excitable medium, a nonlinear dynamic system which has the capacity to propagate a wave
• Growth medium, in biotechnology, an object in which microorganisms or cells in 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

[edit] Cooking

• A degree of doneness in cooking meat; see temperature (meat)

[edit] Dramatic works

• The Medium, an opera by Gian-Carlo Menotti
• Medium (TV series), a television series about a research medium for a district attorney's office

[edit] Print

• The Medium, an entertainment weekly at Rutgers University

[edit] See also

• Media (disambiguation)

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