calyptra
ca·lyp·tra
noun \kə-ˈlip-trə\Definition of CALYPTRA
: a hoodlike structure in a plant; especially : haploid tissue forming a membranous hood over the capsule in a moss
Origin of CALYPTRA
New Latin, from Greek kalyptra veil, from kalyptein to cover — more at hell
First Known Use: circa 1753
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