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

 

forsythia

 noun
noun
BrE BrE//fɔːˈsaɪθiə//
 
; NAmE NAmE//fərˈsɪθiə//
 
[uncountable, countable]
 
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a bush that has small bright yellow flowers in the early spring Word Originmodern Latin, named after William Forsyth (1737–1804), Scottish botanist and horticulturalist, said to have introduced the shrub into Britain from China.
See the Oxford Advanced American Dictionary entry: forsythia