We found 27 dictionaries that define the word somniferous:

General (20 matching dictionaries)

1. somniferous: Merriam-Webster
2. somniferous: Oxford Learner's Dictionaries
3. somniferous: American Heritage Dictionary of the English Language
4. somniferous: Collins English Dictionary
5. somniferous: Vocabulary.com
6. somniferous: Wordnik
7. somniferous: Wiktionary
8. somniferous: Webster's New World College Dictionary, 4th Ed.
9. somniferous: The Wordsmyth English Dictionary-Thesaurus
10. somniferous: Infoplease Dictionary
11. somniferous: Dictionary.com
12. Somniferous: Online Plain Text English Dictionary
13. somniferous: Webster's Revised Unabridged, 1913 Edition
14. somniferous: Rhymezone
15. Somniferous: AllWords.com Multi-Lingual Dictionary
16. somniferous: Webster's 1828 Dictionary
17. somniferous: FreeDictionary.org
18. somniferous: The Phrontistery - A Dictionary of Obscure Words
19. somniferous: Mnemonic Dictionary
20. somniferous: TheFreeDictionary.com

Business (1 matching dictionary)

21. somniferous: Legal dictionary

Computing (1 matching dictionary)

22. somniferous: Encyclopedia

Medicine (4 matching dictionaries)

23. somniferous: Merriam-Webster Medical Dictionary
24. Dorland's Illustrated Medical Dictionary (No longer online)
25. online medical dictionary (No longer online)
26. somniferous: Medical dictionary

Slang (1 matching dictionary)

27. somniferous: Urban Dictionary

Definitions from Wiktionary (somniferous) ▸ adjective:  (pharmacology) causing or inducing sleep, normally with harmful overtones. Similar: soporiferous, soporific, somnific, depressant, somnifacient, somnorific, hypnotic, somnogenic, narcotic, hypnagogic, more... Opposite: awakening, stimulating, invigorating, energizing, refreshing ▸ Words similar to somniferous ▸ Usage examples for somniferous ▸ Idioms related to somniferous ▸ Wikipedia articles (New!) ▸ Popular nouns described by somniferous ▸ Words that often appear near somniferous ▸ Rhymes of somniferous ▸ Invented words related to somniferous