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

See also: biannual

• arctiid moth
• Arctiidae
• Arctium
• Arctium lappa
• Arctium minus
• Arctocebus
• Arctocebus calabarensis
• Arctocephalus
• chains
• chainsaw
• chair
• chair car
• chair of state
• chairlift
• chairman
• chairman of the board
• chairmanship
• chairperson
• chairwoman
• chaise
• chaise longue
• Chait
• chaja
• chakra
• chalaza