We found 23 dictionaries that define the word ballista:

General (20 matching dictionaries)

1. ballista: Merriam-Webster
2. ballista: Oxford Learner's Dictionaries
3. ballista: American Heritage Dictionary of the English Language
4. ballista: Collins English Dictionary
5. ballista: Vocabulary.com
6. Ballista, ballista: Wordnik
7. ballista: Wiktionary
8. ballista: Webster's New World College Dictionary, 4th Ed.
9. ballista: The Wordsmyth English Dictionary-Thesaurus
10. ballista: Infoplease Dictionary
11. Ballista, ballista: Dictionary.com
12. Ballista: Wikipedia, the Free Encyclopedia
13. Ballista: Online Plain Text English Dictionary
14. ballista: Webster's Revised Unabridged, 1913 Edition
15. ballista: Rhymezone
16. Ballista: AllWords.com Multi-Lingual Dictionary
17. ballista: FreeDictionary.org
18. ballista: Mnemonic Dictionary
19. ballista: TheFreeDictionary.com
20. ballista: Merriam-Webster

Art (1 matching dictionary)

21. BALLISTA: The Britannia Lexicon (Middle Ages Glossary)

Computing (1 matching dictionary)

22. ballista: Encyclopedia

Science (1 matching dictionary)

23. Archaeology Wordsmith (No longer online)

(Note: See ballistae as well.)

Definitions from Wiktionary (ballista) ▸ noun:  (weaponry, historical) An ancient military engine, in the form of a crossbow, used for hurling large missiles. Similar: balista, crossbow, arbelest, crossbolt, xbow, quarrel, bombard, bolt thrower, catapult, bolis, more... Types: manuballista, onager, scorpio, polybolos, more... Phrases: FN Ballista, more... Adjectives: roman, ancient, large, hellenistic, latin, genoese, standard, armed ▸ Words similar to ballista ▸ Usage examples for ballista ▸ Idioms related to ballista ▸ Wikipedia articles (New!) ▸ Popular adjectives describing ballista ▸ Words that often appear near ballista ▸ Rhymes of ballista ▸ Invented words related to ballista