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

The practices and academic disciplines of civic leaders, activists, involved citizens and professionals to improve various aspects of local communities.

(law) of assets or organisations: owned and controlled through some representative mechanism that allows a community to influence their operation or use and to enjoy the benefits arising.

(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.

(marketing) The range of approaches and expressions of a marketing idea developed with the hope that it be effective in conveying the ideas to the diverse population of people who receive it.

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.