- antixerotic
- antizionist
- antizymotic agent
- antler
- antlered
- antlfebrile
- antlscarlatinal serum
- antonomasia
- antonym
- antonyms
- antra
- antre
- antrectomy
- antro-atticotomy
- antrocele
- antronasal
- antropyloric
- antroscope
- antrostomy
- antrotympanic
- antrum
- antrum amis
- antrum maxillare
- antuitary
- antwerp
- anuclear
- anulus tendineus
- anulus umbilicalis
- anura
- anuria
- anurla
- anuroid
- anurous
- anury
- anus
- anus vesicalis
- anuual
- anvil
- anvil cap
- anvil chisel
- anvil cinder
- anvil scale
- anvil stake
- anvil stand
- anvil stock
- anvil swage
- anvil-beak
- anvil-bed
- anvil-block
- anvilled
- anxiety
- anxiety neurosis
- anxious
- anxious state
- anxiously
- any
- any character
- any type
- any-mode
- anybody
- anyhow
- anymore
- anyone
- anyplace
- anything
- anytime
- anyway
- anywhere
- anywise
- anzac
- anzymatic action
- anzymatic activity
- aorist
- aoristic
- aorta
- aorta angusta
- aortalgia
- aortic
- aortic aneurysm
- aortic arch
- aortic archm
- aortic area
- aortic hiatus
- aortic obstrution
- aortic spindle
- aortic stenosis
- aorticvalve
- aortitis
- aortolith
- aortopathy
- aortosclerosis
- aortotomy
- apa graphic
- apace
- apache
- apanage
- apancrea
- apandria
- apanthropia
- aparathyrosis