We found 36 dictionaries that define the word trillion:

General (27 matching dictionaries)

1. trillion: Longman Dictionary of Contemporary English
2. trillion: Merriam-Webster
3. trillion: Oxford Learner's Dictionaries
4. trillion: American Heritage Dictionary of the English Language
5. trillion: Collins English Dictionary
6. trillion: Vocabulary.com
7. Trillion, trillion: Wordnik
8. trillion: Cambridge Advanced Learner's Dictionary
9. trillion: Wiktionary
10. trillion: Webster's New World College Dictionary, 4th Ed.
11. trillion: The Wordsmyth English Dictionary-Thesaurus
12. trillion: Infoplease Dictionary
13. trillion: Dictionary.com
14. trillion: Online Etymology Dictionary
15. trillion: Cambridge Essential American English Dictionary
16. Trillion (disambiguation), Trillion (horse), Trillion (short scale), Trillion: Wikipedia, the Free Encyclopedia
17. Trillion: Online Plain Text English Dictionary
18. trillion: Webster's Revised Unabridged, 1913 Edition
19. trillion: Rhymezone
20. Trillion: AllWords.com Multi-Lingual Dictionary
21. trillion: Webster's 1828 Dictionary
22. Trillion: American-Britih Dictionary
23. trillion: FreeDictionary.org
24. trillion: Mnemonic Dictionary
25. trillion: TheFreeDictionary.com

Business (1 matching dictionary)

26. BusinessDictionary.com (No longer online)

Computing (3 matching dictionaries)

27. trillion: Free On-line Dictionary of Computing
28. trillion: CCI Computer
29. Trillion (disambiguation), trillion: Encyclopedia

Medicine (1 matching dictionary)

30. online medical dictionary (No longer online)

Science (3 matching dictionaries)

31. Trillion: Eric Weisstein's World of Mathematics
32. trillion: MATH SPOKEN HERE!
33. Trillion: Extragalactic Astronomy

Slang (1 matching dictionary)

34. TRILLION: Urban Dictionary

(Note: See trillions as well.)

Definitions from Wiktionary ( ) ▸ noun:  (basketball, slang) A statistic formed by a player playing some number of minutes, but recording no stats. Similar: cardinal, 1000000000000, a trillion, one million million, one million million million, triple double, triple single, triple-double, triple, quintuple double, more... Opposite: billion, million, thousand Phrases: one trillion, a trillion, Trillion Tree Campaign, Trillion Game, one trillion in computer storage, more... Adjectives: per, worth, nearest, half, additional, american, current, three, several, top, british Colors:     silver,     gold,     platinum,     emerald,     sapphire, more... ▸ Word origin ▸ Words similar to trillion ▸ Usage examples for trillion ▸ Idioms related to trillion ▸ Wikipedia articles (New!) ▸ Popular adjectives describing trillion ▸ Words that often appear near trillion ▸ Rhymes of trillion ▸ Invented words related to trillion