(1)   Something that is communicated by or to or between people or groups
(2)   The activity of communicating; the activity of conveying information
"They could not act without official communication from Moscow"
(3)   A connection allowing access between persons or places
"How many lines of communication can there be among four people?"
"A secret passageway provided communication between the two rooms"


, from , accusative singular of , from .


  1. The concept or state of exchanging information between entities.
    Some say that communication is a necessary prerequisite for sentience; others say that it is a result thereof.
  2. The potential for information exchange.
    The node had established communication with the network, but had as yet sent no data.
  3. A message; the essential data transferred in an act of communication.
    Surveillance was accomplished by means of intercepting the spies' communications.
  4. The body of all data transferred to one or both parties during an act of communication.
    The subpoena required that the company document their communication with the plaintiff.
  5. An instance of information transfer; a conversation or discourse.
    The professors' communications consisted of lively discussions via email.
  6. A passageway or opening between two locations.
    A round archway at the far end of the hallway provided communication to the main chamber.
  7. A connection between two tissues, organs, or cavities.
    • 1855, William Stokes, The Diseases of the Heart and the Aorta Page 617
      ...and here a free communication had been established between the aorta and the vena cava.


communication (plural: communications)
  1. communication