- AAT... to Ablepsy...
- Ablutomania... to Abruption...
- Abscess... to Acanthrocytosis...
- Acapnia... to Accreta...
- Accretio... to Acheiria...
- Achillobursitis... to Acidocytosis...
- Acidopenia... to Acragnosis...
- Acrania... to Acropachy...
- Acropachyderma... to Actinoneuritis...
- Action... to Additional...
- Adduction... to Adenopharyngitis...
- Adenophlegmon... to Adrenal...
- Adrenalism... to Affection...
- Afibrinogenemia... to Agranulocytopenia...
- Agranulocytosis... to AIPHI...
- Air... to Albumosuria...
- Alcaptonuria... to Allen...
- Allergic... to Alveolar...
- Alveolitis... to Amimia...
- Amino... to Amyoplasia...
- Amyotonia... to Anderson...
- Andes... to Angiodysplasia...
- Angioedema... to Angioscotoma...
- Angiospasm... to Ankyloglossia...
- Ankylosis... to Anoxia...
- Anteflexion... to Antitoxin...
- Anton... to Aphemia...
- Aphonia... to Apraxia...
- Aptyalism... to Areola...
- Argentaffinoma... to Arterial...
- Arteriectasis... to Arthrodysplasia...
- Arthrofibrosis... to Ascaridiasis...
- Ascaridosis... to Assimilation...
- Assmann... to Ataxia...
- Ataxia... to Atopy...
- Atransferrinemia... to Autism...
- Autophony... to Azygos...