We found 15 dictionaries that define the word prematureness:

General (11 matching dictionaries)

1. prematureness: Merriam-Webster
2. prematureness: Collins English Dictionary
3. prematureness: Vocabulary.com
4. prematureness: Wordnik
5. prematureness: Wiktionary
6. prematureness: Dictionary.com
7. prematureness: Rhymezone
8. prematureness: Webster's 1828 Dictionary
9. prematureness: FreeDictionary.org
10. prematureness: Mnemonic Dictionary
11. prematureness: TheFreeDictionary.com

Business (1 matching dictionary)

12. prematureness: Legal dictionary

Computing (1 matching dictionary)

13. prematureness: Encyclopedia

Medicine (2 matching dictionaries)

14. prematureness: Merriam-Webster Medical Dictionary
15. prematureness: Medical dictionary

(Note: See premature as well.)

Definitions from Wiktionary (prematureness) ▸ noun:  The quality of being premature. Similar: prepunctuality, primeness, presexuality, immatureness, unbornness, preternaturalness, preteritness, preternaturality, prefixness, precipitousness, more... Opposite: timeliness, punctuality, promptness ▸ Words similar to prematureness ▸ Usage examples for prematureness ▸ Idioms related to prematureness ▸ Wikipedia articles (New!) ▸ Popular adjectives describing prematureness ▸ Words that often appear near prematureness ▸ Rhymes of prematureness ▸ Invented words related to prematureness