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biannual (1 : occurring twice a year; 2 : biennial sense 1 (A biennial event happens or is done once every two years)
 merriam-webster.com) | |||
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| biannual (1 : occurring twice a year; 2 : biennial sense 1 (A biennial event happens or is done once every two years)
merriam-webster.com) | |||