1. The discipline that studies the principles of transmitting information and the methods by which it is delivered (as print, radio or television etc.)
   "communications is his major field of study";
   - communication theory, communications theory

1. The activity of conveying information
   "they could not act without official communication from Moscow";
   - communicating
    
2. Something that is communicated by or to or between people or groups
   "The memo was an important communication from management"
    
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"

Type of: abstract entity, abstraction, act, bailiwick, connectedness, connection, connexion [Brit], deed, discipline, field, field of study, human action, human activity, study, subject, subject area, subject field

Encyclopedia: Communications, Electrical and Plumbing Union