(telecommunications, military, US) Communications services, such as the installation, operation, maintenance, augmentation, modification, and rehabilitation of communications networks, systems, facilities, and equipment, including off-post extensions, provided for the operation of a military post, camp, installation, station, or activity.

(military) Rear part of a theater of war or theater of operations (behind but contiguous to the combat zone) which contains the lines of communications, establishments for supply and evacuation, and other agencies required for the immediate support and maintenance of the field forces. Also called COMMZ.

Communication between space vehicles, or between such vehicles and a base on Earth, the Moon or other planet, especially when using high-frequency radio waves

Oral communication; speech. / (linguistics) The process of sending and receiving messages with words, including writing and sign language.

The technique of assisting a person with a disability to communicate by helping them to point out letters of the alphabet on a board so as to spell a message.

An academic field that deals with processes of communication, commonly defined as the sharing of symbols over distances in space and time.

(computing) A set of techniques for the exchange of data among two or more threads in one or more processes.

plural of space communication

plural of ex-communication

Alternative spelling of excommunication