We found 6 dictionaries that define the word by trial and error:

General (6 matching dictionaries)

1. by trial and error: Vocabulary.com
2. by trial and error: Dictionary.com
3. by trial and error: Rhymezone
4. by trial and error: FreeDictionary.org
5. by trial and error: Mnemonic Dictionary
6. by trial and error: TheFreeDictionary.com

Definitions from WordNet (by trial and error) ▸ adverb:  in an empirical manner Opposite: methodical, systematic, deliberate ▸ Words similar to by trial and error ▸ Usage examples for by trial and error ▸ Idioms related to by trial and error ▸ Wikipedia articles (New!) ▸ Words that often appear near by trial and error ▸ Rhymes of by trial and error ▸ Invented words related to by trial and error