1. Things from Canada or typically Canadian: culture, publications, tourist trinkets, etc

Encyclopedia: Canadiana

• aortic aneurysm
• aortic arch
• aortic orifice
• aortic plexus
• aortic stenosis
• aortic valve
• aortitis
• Aotus
• Aotus trivirgatus
• aoudad
• apace
• apache
• apache dance
• apache devil dance
• apadana
• Apalachicola
• Apalachicola River
• Apalachicola rosemary
• apanage
• apar
• aparejo
• apart
• apartheid
• aparthotel
• apartment