- acidóza, acidosa
- acidum
- acidum lacticum
- acidum uricum
- acidus
- acies
- acikulární
- aciniformní
- acinus
- aclimatisatio
- aclusio
- acognosis
- acompagnato
- acquired dysarthria
- acquis
- acquis communautaire
- acquisition of knowledge
- acratothermae
- acre
- acroasphyxia
- acrocephalus
- acrodermatitis
- acrodynia
- acroerythrosis
- acromelalgia
- acromion
- acromionectomia
- acromiothoracicus
- acroostealgia
- acropathia
- acropigmentatio
- acropodion
- acroposthitis
- actinicus
- actinium
- actinodermatitis
- actinoid, aktinoid
- actinomycinum
- actio
- actio in distans
- actio in proximum
- actio nata
- action research
- activatio
- activator
- activitas
- activitygram
- actum
- actus essendi
- actus fidei