We found 2 dictionaries that define the word defense communications system:

General (1 matching dictionary)

1. Defense Communications System: TheFreeDictionary.com

Tech (1 matching dictionary)

2. DOD Dictionary of Military Terms (No longer online)

Phrases: Defense Satellite Communications System, more... ▸ Words similar to defense communications system ▸ Usage examples for defense communications system ▸ Idioms related to defense communications system ▸ Wikipedia articles (New!) ▸ Words that often appear near defense communications system ▸ Rhymes of defense communications system ▸ Invented words related to defense communications system