Word Study
racon
WORDNET DICTIONARY
Noun racon has 1 sense
- racon(n = noun.communication) radar beacon - a device that, on receiving radar signals, transmits coded signals in response to help navigators determine their position; Array is a kind of electronic signal
OXFORD DICTIONARY
racon, n. esp. US a radar beacon that can be identified and located by its response to a radar signal from a ship etc.
Etymology
radar + bea con
For further exploring for "racon" in Webster Dictionary Online