noun
: a radar transmitter that upon receiving a radar signal emits a signal which reinforces the normal reflected signal or which introduces a code into the reflected signal especially for identification purposes
noun
: a radar transmitter that upon receiving a radar signal emits a signal which reinforces the normal reflected signal or which introduces a code into the reflected signal especially for identification purposes
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012