We found 8 dictionaries that define the word as required:

General (6 matching dictionaries)

1. as required: Vocabulary.com
2. as required: Dictionary.com
3. as required: Rhymezone
4. as required: FreeDictionary.org
5. as required: Mnemonic Dictionary
6. as required: TheFreeDictionary.com

Business (1 matching dictionary)

7. as required: Legal dictionary

Computing (1 matching dictionary)

8. as required: Encyclopedia

Definitions from WordNet (as required) ▸ adverb:  according to need (physicians use PRN in writing prescriptions) Phrases: as and when required, more... ▸ Words similar to as required ▸ Usage examples for as required ▸ Idioms related to as required ▸ Wikipedia articles (New!) ▸ Words that often appear near as required ▸ Rhymes of as required ▸ Invented words related to as required