biannual <=>semiannual: twice a year or every six months or two times within a 365-day period Biennial vs Biannual 1. Biennial: Meaning: Refers to something that happensonce every two years. Example: "The organization holds abiennialconference, meaning it occurs once every two years." 意思...
The meaning of BIANNUAL is occurring twice a year. How to use biannual in a sentence. Did you know? What do bimonthly and biweekly mean?: Usage Guide