1. Twice a year
   "we hold our big sale biannually"

See also: biannual

• adangle
• Adansonia
• Adansonia digitata
• Adansonia gregorii
• Adapa
• Adapid
• Adapid group
• Adapin
• adapt
• adaptability
• adaptable
• adaptation
• adaptational
• adaptative
• adapted
• adapter
• adaption
• adaptive
• adaptive radiation
• adaptor
• Adar
• Adar Sheni
• adaxial
• adaxially
• add