Medium word meaning and definition

[noun] an occupation for which you are especially well suited; "in law he found his true metier"
[noun] an intervening substance through which signals can travel as a means for communication
[noun] a means or instrumentality for communicating
[noun] the surrounding environment; "fish require an aqueous medium"
[noun] someone who serves as an intermediary between the living and the dead; "he consulted several mediums"
[noun] a state that is intermediate between extremes; a middle position; "a happy medium"
[noun] an intervening substance through which something is achieved; "the dissolving medium is called a solvent"
[noun] (bacteriology) a nutrient substance (solid or liquid) that is used to cultivate micro-organisms
[noun] (biology) a substance in which specimens are preserved or displayed
[noun] a liquid with which pigment is mixed by a painter
[adjective] (of meat) cooked until there is just a little pink meat inside
[adjective] around the middle of a scale of evaluation of physical measures; "an orange of average size"; "intermediate capacity"; "a plane with intermediate range"; "medium bombers"

\Me"di*um\, n.; pl. L. {Media}, {E}. {Mediums}. [L. medium the middle, fr. medius middle. See {Mid}, and cf. {Medius}.] 1. That which lies in the middle, or between other things; intervening body or quantity. Hence, specifically:
(a) Middle place or degree; mean. The just medium . . . lies between pride and abjection. --L'Estrange.
(b) (Math.) See {Mean}.
(c) (Logic) The mean or middle term of a syllogism; that by which the extremes are brought into connection. 2. A substance through which an effect is transmitted from one thing to another; as, air is the common medium of sound. Hence: The condition upon which any event or action occurs; necessary means of motion or action; that through or by which anything is accomplished, conveyed, or carried on; specifically, in animal magnetism, spiritualism, etc., a person through whom the action of another being is said to be manifested and transmitted. Whether any other liquors, being made mediums, cause a diversity of sound from water, it may be tried. --Bacon. I must bring together All these extremes; and must remove all mediums. --Denham. 3. An average. [R.] A medium of six years of war, and six years of peace. --Burke. 4. A trade name for printing and writing paper of certain sizes. See {Paper}. 5. (Paint.) The liquid vehicle with which dry colors are ground and prepared for application. {Circulating medium}, a current medium of exchange, whether coin, bank notes, or government notes. {Ethereal medium} (Physics), the ether. {Medium of exchange}, that which is used for effecting an exchange of commodities -- money or current representatives of money.
\Me"di*um\, a. Having a middle position or degree; mean; intermediate; medial; as, a horse of medium size; a decoction of medium strength.

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