Definition of perennial noun from the Oxford Advanced Learner's Dictionary

 

perennial

 noun
noun
BrE BrE//pəˈreniəl//
 
; NAmE NAmE//pəˈreniəl//
 
Plants
 
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any plant that lives for more than two years compare annual, biennial See related entries: Plants Word Origin mid 17th cent. (in the sense ‘remaining leafy throughout the year, evergreen’): from Latin perennis ‘lasting the year through’ + -ial.
See the Oxford Advanced American Dictionary entry: perennial

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