ad-
Concise Oxford English Dictionary © 2008 Oxford University Press:
ad- /ad/ (also a- before sc, sp, st; ac- before c, k, q; af- before f; ag- before g; al- before l; an- before n; ap- before p; ar- before r; as- before s; at- before t)
▶prefix
- 1 denoting motion or direction to: advance.
- 2 denoting reduction or change into: adulterate.
- 3 denoting addition or increase: adjunct.
– origin from L. ad ‘to’.
'ad-' also found in these Oxford entries:
a-
- abandon
- abase
- abet
- ac-
- accede
- accelerate
- accentor
- accept
- accident
- acclaim
- acclimate
- acclivity
- accolade
- accommodate
- accompany
- accomplish
- accord
- accost
- accouchement
- accoutre
- accredit
- accrete
- accumulate
- accurate
- accuse
- accustom
- acquaint
- acquiesce
- acquire
- acquit
- AD
- ad
- -ad
- -ad
- adagio
- adapt
- add
- addicted
- address
- adduce
- -ade
- adequate
- ad fin.
- adhere
- adhibit
- ad hoc
- ad hominem
- ad infinitum
