- anterograde
- anteversion
- anthraconecrosis
- anthracosis
- anthropogenesis
- anthroponomy
- anthropophagy
- anthropozoonosis
- anti-achromotrichia
- anti-insulin
- antiabortifacient
- antiaggIutinin
- antiaggressin
- antialexin
- antiamebic
- antianemic
- anglectasis
- anglemphrasis
- angnilluliasis
- angulus costae
- angulus iridocornealis
- angulus oris
- anhelous
- anhemolytic
- anhibitrope
- anhidrotic
- anhydrase
- anhydride
- anilinism
- anima
- animal extract
- animal heat
- animal toxin
- animal-alkaloid
- animalcule
- animality
- aniseikonia
- anisergy
- anisochromasia
- anisocytosis
- anisodont
- anisogamy
- anisomeric
- anisometropia
- anisopia
- anisopolkilocytosis
- anisospore
- anisotonic
- anisotropy
- ankle
- ankle bone
- ankylocolpos
- ankylopoietica spondylitis
- ankylosingspondylitis
- ankylostomiasis
- ankylurethria
- annular plexus
- annulus abdominalis
- annulus cillaris
- annulus urethralis
- anochlesia
- anococcygeal ligament
- anodal
- anodontia
- anodynia
- anomaloscope
- anomaly
- anonychia
- anopheles
- anophthalmia
- anorchism
- anorectal abscess
- anorectocoionlc
- anorexia nervesa
- anorexy
- anorthopia
- anoscope
- anosmia
- anosteoplasia
- anotia
- anovular
- anoxaemia
- ansa vitellina
- ansae sacrales
- ansiform
- antacid
- antagonist
- antagonistic muscle
- antalgic
- antalkaline
- antaphrodisiac
- antasthmatic
- ammoniated
- ammonification
- ammonirrhea
- ammonium
- ammonolysis
- ammotherapy
- amnalgesia
- amnesiac