the discipline that studies the principles of transmiting information and the methods by which it is delivered (as print or radio or television etc.)

technical and intelligence information derived from foreign communications by other than the intended recipients

(computer science) rules determining the format and transmission of data

an artificial satellite that relays signals back to earth; moves in a geostationary orbit

Canadian agency that gathers communications intelligence and assist law enforcement and security agencies

the activity of designing and constructing and maintaining communication systems