An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

A condition in which all fixed or mobile equipments capable of radio transmitting in an area are kept inoperative, typically for the duration of some sensitive time period. The term has both military and civilian applications.

→ radio; → silence.

1) Absence of sound or noise.
2) The state or fact of being silent.

Noun from → silent.