1. Not having undergone pasteurization
   - unpasteurized

See also: pasteurise [Brit]

• genus Aulacorhyncus
• genus Aulostomus
• genus Aureolaria
• genus Auricularia
• genus Auriparus
• genus Australopithecus
• genus Austrocedrus
• genus Austrotaxus
• genus Automeris
• genus Avahi
• genus Avena
• genus Averrhoa
• genus Avicennia
• genus Ayapana
• genus Aythya
• genus Azadirachta
• genus Azolla
• genus Babesia
• genus Babyrousa
• genus Baccharis
• genus Bacillus
• genus Bacteroides
• genus Baiomys
• genus Bairdiella
• genus Balaena