We found 6 dictionaries that define the word cygnus x 1:

General (4 matching dictionaries)

1. Cygnus X-1: Wiktionary
2. Cygnus X-1: Infoplease Dictionary
3. cygnus x-1, cygnus x 1: Dictionary.com
4. Cygnus X-1, Cygnus X-1 (disambiguation), Cygnus X-1 (song series): Wikipedia, the Free Encyclopedia

Computing (1 matching dictionary)

5. Cygnus X-1: Encyclopedia

Science (1 matching dictionary)

6. Cygnus X-1: Extragalactic Astronomy

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