We found 16 dictionaries that define the word in writing:

General (13 matching dictionaries)

1. in writing: Merriam-Webster
2. in writing: Oxford Learner's Dictionaries
3. in writing: Vocabulary.com
4. in writing: Cambridge Advanced Learner's Dictionary
5. in writing: Wiktionary
6. in writing: Dictionary.com
7. in writing: Rhymezone
8. in writing: FreeDictionary.org
9. in writing: Mnemonic Dictionary
10. in writing: TheFreeDictionary.com
11. in writing: Longman Dictionary of Contemporary English

Business (1 matching dictionary)

12. in writing: Legal dictionary

Computing (1 matching dictionary)

13. in writing: Encyclopedia

Miscellaneous (1 matching dictionary)

14. in writing: Idioms

Definitions from WordNet (in writing) ▸ adverb:  as written or printed Phrases: put something in writing, pronoun in ancient writing, a message in writing, get in writing, to put down in writing, more... ▸ Words similar to in writing ▸ Usage examples for in writing ▸ Idioms related to in writing ▸ Wikipedia articles (New!) ▸ Words that often appear near in writing ▸ Rhymes of in writing ▸ Invented words related to in writing