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English definition of “sepal”

sepal

noun [C]     /ˈsep.əl/ US  /ˈsiː.pəl/ specialized
one of the parts forming the outer part of a flower that surround the petals and are usually small and greenParts of plantsFlowers - general wordsFlowers and flowering plants
(Definition of sepal noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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