We found 26 dictionaries that define the word communications:

General (14 matching dictionaries)

1. communications: Merriam-Webster
2. communications: Collins English Dictionary
3. communications: Vocabulary.com
4. Communication's, Communications, communication's, communications: Wordnik
5. communications: Cambridge Advanced Learner's Dictionary
6. communications: Wiktionary
7. communications: Dictionary.com
8. communications: Cambridge Essential American English Dictionary
9. Communications (album), Communications: Wikipedia, the Free Encyclopedia
10. communications: Rhymezone
11. communications: FreeDictionary.org
12. communications: Mnemonic Dictionary
13. communications: TheFreeDictionary.com
14. communications: Longman Dictionary of Contemporary English

Art (1 matching dictionary)

15. The Organon: A Conceptually Indexed Dictionary (by Genus and Differentia) (No longer online)

Business (2 matching dictionaries)

16. communications: Merriam-Webster Legal Dictionary
17. BusinessDictionary.com (No longer online)

Computing (3 matching dictionaries)

18. Communications: Cybernetics and Systems
19. Webopedia (No longer online)
20. communications: Encyclopedia

Medicine (1 matching dictionary)

21. communications: Merriam-Webster Medical Dictionary

Miscellaneous (2 matching dictionaries)

22. Sociology (No longer online)
23. COMMUNICATIONS: Masonic Dictionary

Religion (1 matching dictionary)

24. communications: Father Jeromes DICTIONARY of Words/Phrases Used in the QUFD Website

Slang (1 matching dictionary)

25. communications: Urban Dictionary

Tech (1 matching dictionary)

26. Dictionary for Avionics (No longer online)

(Note: See communication as well.)

Definitions from Wiktionary (communications) ▸ noun:  Telecommunications, the science and technology of communicating, especially by electronic means. Similar: communicating, telecommunications, comm, comunication, messages, intercommunication, marketing, communicator, broadcasting, transmission, more... Opposite: isolation, silence, misunderstanding, disconnection, secrecy Types: verbal, nonverbal, written, visual, electronic, interpersonal, group, public, professional, more... Phrases: data communications, Communications system, mass communications, communications network, communications technology, more... Adjectives: personal, electronic, internal, wireless, poor, private, modern, mobile, official, direct, verbal Colors:     blue,     green,     orange,     yellow,     red, more... ▸ Words similar to communications ▸ Usage examples for communications ▸ Idioms related to communications ▸ Wikipedia articles (New!) ▸ Popular adjectives describing communications ▸ Words that often appear near communications ▸ Rhymes of communications ▸ Invented words related to communications