We found 20 dictionaries that define the word massiveness:

General (16 matching dictionaries)

1. massiveness: Merriam-Webster
2. massiveness: Oxford Learner's Dictionaries
3. massiveness: Collins English Dictionary
4. massiveness: Vocabulary.com
5. massiveness: Wordnik
6. massiveness: Cambridge Advanced Learner's Dictionary
7. massiveness: Wiktionary
8. Massiveness, massiveness: Dictionary.com
9. Massiveness: Online Plain Text English Dictionary
10. massiveness: Webster's Revised Unabridged, 1913 Edition
11. massiveness: Rhymezone
12. Massiveness: AllWords.com Multi-Lingual Dictionary
13. massiveness: Webster's 1828 Dictionary
14. massiveness: FreeDictionary.org
15. massiveness: Mnemonic Dictionary
16. massiveness: TheFreeDictionary.com

Business (1 matching dictionary)

17. massiveness: Legal dictionary

Computing (1 matching dictionary)

18. massiveness: Encyclopedia

Medicine (2 matching dictionaries)

19. massiveness: Merriam-Webster Medical Dictionary
20. massiveness: Medical dictionary

(Note: See massive as well.)

Definitions from Wiktionary (massiveness) ▸ noun:  The property of being massive. Similar: heftiness, ponderosity, bulkiness, ponderousness, heft, largeness, immenseness, immensity, massiness, hypermassiveness, more... Opposite: smallness, slightness, tininess, delicacy Types: enormous, colossal, mammoth, gargantuan, immense, hefty, substantial, bulky, weighty, more... ▸ Words similar to massiveness ▸ Usage examples for massiveness ▸ Idioms related to massiveness ▸ Wikipedia articles (New!) ▸ Popular adjectives describing massiveness ▸ Words that often appear near massiveness ▸ Rhymes of massiveness ▸ Invented words related to massiveness