American English

Definition of sepal noun from the Oxford Advanced American Dictionary

 

sepal

 noun
noun
NAmE//ˈsipl//
 
(technology)
 
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a part of a flower, like a leaf, that lies under and supports the petals (= the delicate colored parts that make up the head of the flower). Each flower has a ring of sepals called acalyx.
See the Oxford Advanced Learner's Dictionary entry: sepal