calyx

noun
🔊/ˈkeɪlɪks/
🔊/ˈkeɪlɪks/
(plural calyxes, calyces
🔊/ˈkeɪlɪsiːz/
🔊/ˈkeɪlɪsiːz/
)
(specialist)
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  1. the ring of small green leaves (called sepals) that protect a flower before it opens花萼
    Word Originlate 17th cent.: from Latin, from Greek kalux ‘case of a bud, husk’, related to kaluptein ‘to hide’.