| noun | a means or instrumentality for storing or communicating information |
| noun | the surrounding environment “fish require an aqueous medium” |
| noun | an intervening substance through which signals can travel as a means for communication |
| noun | (bacteriology) a nutrient substance (solid or liquid) that is used to cultivate micro-organisms |
| noun | a liquid with which pigment is mixed by a painter |
| noun | (biology) a substance in which specimens are preserved or displayed |
| noun | an intervening substance through which something is achieved “the dissolving medium is called a solvent” |
| noun | a state that is intermediate between extremes; a middle position “a happy medium” |
| noun | someone who serves as an intermediary between the living and the dead “he consulted several mediums” |
| noun | (usually plural) transmissions that are disseminated widely to the public |
| noun | an occupation for which you are especially well suited “in law he found his true metier” |
| medial | adjective | relating to or situated in or extending toward the middle |
| spiritualism | noun | the belief that the spirits of dead people can communicate with people who are still alive (especially via a medium) |