Word Study
as long as |
as luck would have it |
as much as possible |
as needed |
as one |
as required
| as such
| as the crow flies
| as usual
| as was common
| as we say
as required
WORDNET DICTIONARY
Adverbial as required has 1 sense
- as required(r = adv.all) as needed, prn, pro re nata - according to need (physicians use PRN in writing prescriptions); "add water as needed"
For further exploring for "as required" in Webster Dictionary Online
