noun🔗ShareA plant that requires two years to complete its life-cycle, germinating and growing in its first year, then producing its flowers and fruit in its second year, after which it usually dies"The gardener planted the biennial nasturtium seeds in the spring. "plantagriculturebiologynatureChat with AIVocabulary GamePractice Reading
noun🔗ShareAn event that happens every two years"The school's art fair is a biennial event. "timeeventfestivalChat with AIVocabulary GamePractice Reading
adjective🔗ShareHappening every two years."The school's parent-teacher meeting is a biennial event. "timefrequencyChat with AIVocabulary GamePractice Reading
adjective🔗ShareLasting for two years."The school's art competition is biennial, held every other year. "timefrequencyChat with AIVocabulary GamePractice Reading