What is the meaning of medium?

noun

• A means or instrumentality for storing or communicating information.
• The surrounding environment.
  • usage: "fish require an aqueous medium"
• An intervening substance through which signals can travel as a means for communication.
• Bacteriology) a nutrient substance (solid or liquid) that is used to cultivate micro-organisms.
  • synonyms: culture medium
• A liquid with which pigment is mixed by a painter.
• Biology) a substance in which specimens are preserved or displayed. (
• An intervening substance through which something is achieved.
  • usage: "the dissolving medium is called a solvent"
• A state that is intermediate between extremes; a middle position.
  • usage: "a happy medium"
• Someone who serves as an intermediary between the living and the dead.
  • usage: "he consulted several mediums"
  • synonyms: spiritualist, sensitive
• Usually plural. ( transmissions that are disseminated widely to the public)
  • synonyms: mass medium
• An occupation for which you are especially well suited.
  • usage: "in law he found his true metier"
  • synonyms: metier

adjective

• Around the middle of a scale of evaluation.
  • usage: "an orange of average size"; "intermediate capacity"; "medium bombers"
  • synonyms: average, intermediate
• Meat) cooked until there is just a little pink meat inside. (.