Word Study
as it is |
as it were |
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 needed
WORDNET DICTIONARY
Adverbial as needed has 1 sense
- as needed(r = adv.all) as required, prn, pro re nata - according to need (physicians use PRN in writing prescriptions); "add water as needed"
For further exploring for "as needed" in Webster Dictionary Online
