noun

1. the act of transmitting
2. 1. a giving or exchanging of information, signals, or messages as by talk, gestures, or writing
   2. the information, signals, or message
3. close, sympathetic relationship
4. a means of communicating; specif.,
   1. a system for sending and receiving messages, as by telephone, telegraph, radio, etc.
   2. a system as of routes for moving troops and materiel
   3. a passage or way for getting from one place to another
5. 1. the art of expressing ideas, esp. in speech and writing
   2. the science of transmitting information, esp. in symbols