1 biennial /baɪˈɛnijəl/ adjective Learner's definition of BIENNIAL
always used before a noun
1
: happening every two years两年一次的;每两年的 2
of a plant : living for only two years or seasons : having a life cycle that is two years or seasons long(植物)两年生的,两季生的 — compare 1annual, 1perennial 2 biennial /baɪˈɛnijəl/ noun
plural biennials
2 biennial
/baɪˈɛnijəl/
noun
plural biennials
Learner's definition of BIENNIAL
[count]
: a plant that lives for only two years or seasons : a biennial plant两年生植物;两季生植物 — compare 2annual, 2perennial