1. communications, communication theory, discipline, subject, subject area, subject field, field, field of study, study, bailiwick
usage: the discipline that studies the principles of transmiting information and the methods by which it is delivered (as print or radio or television etc.); "communications is his major field of study"
Noun
1. communications, communication theory, discipline, subject, subject area, subject field, field, field of study, study, bailiwick
usage: the activity of communicating; the activity of conveying information; "they could not act without official communication from Moscow"
2. communication, communicating, act, deed, human action, human activity
usage: something that is communicated by or to or between people or groups
3. communication, abstraction, abstract entity
usage: 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"