We found 6 dictionaries that define the word major operation:

General (2 matching dictionaries)

1. Major Operation: Wikipedia, the Free Encyclopedia
2. major operation: TheFreeDictionary.com

Computing (2 matching dictionaries)

3. major operation, Major Operation: Encyclopedia

Medicine (1 matching dictionary)

4. online medical dictionary (No longer online)

Tech (1 matching dictionary)

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

Definitions from Wikipedia (Major Operation) ▸ noun:  a 1971 science fiction book by Northern Irish author James White, the third volume in the Sector General series. ▸ Words similar to major operation ▸ Usage examples for major operation ▸ Idioms related to major operation ▸ Wikipedia articles (New!) ▸ Words that often appear near major operation ▸ Rhymes of major operation ▸ Invented words related to major operation