- advanceTo help the progress of (something); to further.
- a-Forming verbs with the sense away, up, on, out.
- abevacuationAn abnormal evacuation.
- ab extraFrom outside.
- abscopalDenoting the effect that irradiation of a tissue has on remote nonirradiated tissue.
- abstrictTo cut off, as in abstriction; abjoint
- araceTo tear up by the roots; to draw away.
- as-Away from.