Medium definition

mēdē-əm
A substance that makes possible the transfer of energy from one location to another, especially through waves. For example, matter of sufficient density can be a medium for sound waves, which transfer mechanical energy.
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A person thought to have the power to communicate with the spirits of the dead or with agents of another world or dimension.
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See media.
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Between rare and well-done.
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A person through whom communications are thought to be sent to the living from spirits of the dead.
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The definition of a medium is something that helps an effect to happen, or is a singular form of media.

An example of a medium is a metal spoon sitting in a cup of hot tea that is too hot to touch.

An example of a medium is a newspaper from the combined media form of newspapers, television, magazines, radio and the Internet.

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Something, such as an intermediate course of action, that occupies a position or represents a condition midway between extremes.
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A substance, such as agar, in which bacteria or other microorganisms are grown for scientific purposes.
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(chemistry) A filtering substance, such as filter paper.
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A size of paper, usually 18 by 23 inches or 17.5 by 22 inches.
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A means of mass communication, such as newspapers, magazines, radio, or television.
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The group of journalists and others who constitute the communications industry and profession.
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A surrounding environment in which something functions and thrives.
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The substance in which a specific organism lives and thrives.
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A culture medium.
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A specific kind of artistic technique or means of expression as determined by the materials used or the creative methods involved.

The medium of lithography.

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The materials used in a specific artistic technique.

Oils as a medium.

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Any material or technique as used for expression or delineation in art.
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A liquid mixed with pigments to give smoothness.
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Something intermediate.
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A middle state or degree; mean.
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Any means, agency, or instrumentality.
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A means of communication that reaches the general public and, often, carries advertising.
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A substance that propagates energy or signals through space via changes in its own state.

Air acts as a medium for the transmission of sound waves.

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The sparsely distributed gas and dust subsisting in the space between stars.
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A surrounding environment in which something functions and thrives.
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The substance in which a specific organism lives and thrives.
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A culture medium.
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A substance that conveys something, i.e., through which something is carried or transmitted. In the context of telecommunications, a medium is something that passively supports or allows the conveyance or transmission of a signal, and is not necessarily a tangible thing that can be touched. See transmission medium.
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(plural media or mediums) The nature of the surrounding environment, e.g. solid, liquid, gas, vacuum, or a specific substance such as a solvent.
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​(plural media or mediums) The material or empty space through which signals, waves or forces pass.
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​(plural media or mediums) A format for communicating or presenting information.
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(plural media or mediums, engineering) The materials used to finish a workpiece using a mass finishing or abrasive blasting process.
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(plural media or mediums, microbiology) A nutrient solution for the growth of cells in vitro.
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(plural media or mediums) The means or channel by which an aim is achieved.
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(plural mediums or media) A liquid base which carries pigment in paint.
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(plural mediums or media, painting) A tool used for painting or drawing.

Acrylics, oils, charcoal and gouache are all mediums I used in my painting.

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(plural mediums, spiritualism) Someone who supposedly conveys information from the spirit world.
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(plural mediums) Anything having a measurement intermediate between extremes, such as a garment or container.
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(plural mediums) A person whom garments or apparel of intermediate size fit.
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(plural mediums, Ireland, dated, informal) A half-pint serving of Guinness (other stout in some regions).
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A middle place or degree.

A happy medium.

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(dated) An average; sometimes the mathematical mean.
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(logic) The mean or middle term of a syllogism, that by which the extremes are brought into connection.
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Of intermediate size, degree, amount etc.
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Of meat, cooked to a point greater than rare but less than well done; typically, so the meat is still red in the centre.
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To a medium extent.
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Any surrounding or pervading substance in which bodies exist or move.
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Medium is defined as something in the middle or in-between.

An example of medium is a shirt that's bigger than small and smaller than large.

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A solvent with which paint is thinned to the proper consistency.
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Something, such as an intermediate course of action, that occupies a position or represents a condition midway between extremes.
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An intervening substance through which something else is transmitted or carried on.
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An agency by which something is accomplished, conveyed, or transferred.

The train was the usual medium of transportation in those days.

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(computers) Any of various kinds of storage devices, such as hard drives or digital audiotape.
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An intervening thing through which a force acts or an effect is produced.

Copper is a good medium for conducting heat.

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Environment.
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(microbiol.) A sterilized nutritive mixture, as enriched agar, for cultivating bacteria, viruses, etc.
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Occurring or being between two degrees, amounts, or quantities; intermediate.

Ordered a medium coffee.

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In a middle position; intermediate in quality, amount, degree, size, etc.
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Other Word Forms

Noun

Singular:
medium
Plural:
media 2, mediums

Origin of medium

  • Latin from neuter of medius middle medhyo- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Latin medium, neuter of medius (“middle”). Compare middle.

    From Wiktionary