We found 18 dictionaries that define the word and how:

General (16 matching dictionaries)

1. and how: Merriam-Webster
2. and how: Oxford Learner's Dictionaries
3. and how, and how: Collins English Dictionary
4. and how: Vocabulary.com
5. And how: Cambridge Advanced Learner's Dictionary
6. and how: Wiktionary
7. and how, and how: Dictionary.com
8. and how: Rhymezone
9. and how: MyWord.info
10. and how: FreeDictionary.org
11. and how: Mnemonic Dictionary
12. and how: TheFreeDictionary.com
13. and how: Longman Dictionary of Contemporary English
14. and how: Merriam-Webster

Miscellaneous (1 matching dictionary)

15. And how, and how: Idioms

Slang (1 matching dictionary)

16. And how, and how: Urban Dictionary

Definitions from WordNet (and how) ▸ adverb:  an expression of emphatic agreement Opposite: inverse, contrary, reverse, antithesis Phrases: The Food of the Gods and How It Came to Earth, Who We Are and How We Got Here, why and how, confused and unsure how to react, how can a cat fly and how, more... ▸ Words similar to and how ▸ Usage examples for and how ▸ Idioms related to and how ▸ Wikipedia articles (New!) ▸ Words that often appear near and how ▸ Rhymes of and how ▸ Invented words related to and how