We found 11 dictionaries that define the word theater of operations:

General (9 matching dictionaries)

1. theater of operations: Merriam-Webster
2. theater of operations: Vocabulary.com
3. theater of operations: Infoplease Dictionary
4. theater of operations: Dictionary.com
5. Theater of operations: Wikipedia, the Free Encyclopedia
6. theater of operations: Rhymezone
7. theater of operations: FreeDictionary.org
8. theater of operations: Mnemonic Dictionary
9. theater of operations: TheFreeDictionary.com

Computing (1 matching dictionary)

10. theater of operations: Encyclopedia

Tech (1 matching dictionary)

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

Definitions from WordNet (theater of operations) ▸ noun:  a region in which active military operations are in progress ▸ Words similar to theater of operations ▸ Usage examples for theater of operations ▸ Idioms related to theater of operations ▸ Wikipedia articles (New!) ▸ Words that often appear near theater of operations ▸ Rhymes of theater of operations ▸ Invented words related to theater of operations