calyx

Từ điển WordNet v3.1 - WordNet Dictionary

noun

(botany) the whorl of sepals of a flower collectively forming the outer floral envelope or layer of the perianth enclosing and supporting the developing bud;
usually green
• Derivationally related forms:
calyceal
• Topics:
botany, phytology
• Hypernyms:
coil, whorl, roll, curl, curlicue,
ringlet, gyre, scroll
• Hyponyms:
hull, pappus
• Part Holonyms:
perianth, chlamys, floral envelope, perigone, perigonium
• Part Meronyms:
sepal