We found 19 dictionaries that define the word monomaniacal:

General (14 matching dictionaries)

1. monomaniacal: Merriam-Webster
2. monomaniacal: Oxford Learner's Dictionaries
3. monomaniacal: Collins English Dictionary
4. monomaniacal: Vocabulary.com
5. monomaniacal: Wordnik
6. monomaniacal: Cambridge Advanced Learner's Dictionary
7. monomaniacal: Wiktionary
8. monomaniacal: Dictionary.com
9. Monomaniacal: Online Plain Text English Dictionary
10. monomaniacal: Rhymezone
11. Monomaniacal: AllWords.com Multi-Lingual Dictionary
12. monomaniacal: FreeDictionary.org
13. monomaniacal: Mnemonic Dictionary
14. monomaniacal: TheFreeDictionary.com

Business (1 matching dictionary)

15. monomaniacal: Legal dictionary

Computing (1 matching dictionary)

16. monomaniacal: Encyclopedia

Medicine (3 matching dictionaries)

17. monomaniacal: Merriam-Webster Medical Dictionary
18. online medical dictionary (No longer online)
19. monomaniacal: Medical dictionary

(Note: See monomania as well.)

Definitions from Wiktionary (monomaniacal) ▸ adjective:  Of or relating to a monomaniac. Similar: neurotic, psychoneurotic, self-centered, self-minded, self-opinionated, particularist, fanatick, technomaniacal, narcissistic, extremist, more... Opposite: multifaceted, well-rounded, versatile ▸ Words similar to monomaniacal ▸ Usage examples for monomaniacal ▸ Idioms related to monomaniacal ▸ Wikipedia articles (New!) ▸ Popular nouns described by monomaniacal ▸ Words that often appear near monomaniacal ▸ Rhymes of monomaniacal ▸ Invented words related to monomaniacal