- anorectal
- aberdonian
- atresia vulvae superficialis
- atresia of pulmonary artery
- acromiothoracic artery
- atypical tubercle bacilli
- ament
- acromiale height
- abrachiocephalia
- acarbia
- arrested disease
- arrested case
- afterloading screw
- asphyxiation
- a trailer
- amenorrheal
- albuminuric
- albuminoid ammonia
- amino_oxypurine
- ammonolysis
- atrophy
- a shivering sensation
- animal metabolism
- abolisher
- achaean
- appellant
- absolute space
- apostolic delegate
- admirality
- academicism
- associated field
- airterminal
- adsorption
- anesthetic
- aborted seed
- aborticide
- anaesthetic
- anaesthetic apparatus
- anaesthetic accident
- anaesthesiology
- anaesthetic breathing system
- anaesthetic complication
- anaesthetic dead space
- abortifacient
- appetize
- appetite stimulant
- anaesthetic leprosy
- a pasture land
- anoestrous
- an interesting thing