(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.

group possession of an item or concept

(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.

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

plural of virtual community

A group of people who primarily communicate or interact via the Internet.

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

(Ireland) A nomadic ethnic minority, the Irish Travellers.

plural of community college

(US) An educational institution providing college education granting certificates, diplomas, and associate's degrees, but not higher level degrees; junior college.