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