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

See also: biannual

• cortically
• corticifugal
• corticipetal
• Corticium
• Corticium salmonicolor
• Corticium solani
• cortico-hypothalamic
• corticoafferent
• corticoefferent
• corticofugal
• corticoid
• corticospinal tract
• corticosteroid
• corticosterone
• corticotrophin
• corticotropin
• cortina
• Cortinariaceae
• Cortinarius
• Cortinarius armillatus
• Cortinarius atkinsonianus
• Cortinarius corrugatus
• Cortinarius gentilis
• Cortinarius mutabilis
• Cortinarius semisanguineus