ALL meanings of calyptra
ca·lyp·tra
C c - noun calyptra a membranous hood covering the spore-bearing capsule of mosses and liverworts 3
- noun calyptra any hoodlike structure, such as a root cap 3
- noun calyptra the remains of the female sex organ, or archegonium, of a moss, forming the caplike covering of the spore case 3
- noun calyptra any similar covering of a fruit or flower 3
- noun calyptra a root cap. 1
- noun calyptra (botany) In bryophytes, a thin, hood of tissue that forms from the archegonium and covers the developing sporophyte and is shed as it ripens.Jackson, Benjamin, Daydon; A Glossary of Botanic Terms with their Derivation and Accent; Published by Gerald Duckworth & Co. London, 4th ed 1928. 1
- noun calyptra Also called cap. a hood or hoodlike part, as the lid of the capsule in mosses. 1
- noun calyptra (botany) any cap-like covering of a flower or fruit, such as the operculum over the unopened buds of Eucalyptus flowers. 0
- noun calyptra (botany) Any of various coverings at the tips of structures, in the terminology of various authors; for example rootcaps and the apical cells of trichomes. 0
- noun calyptra (entomology) In flies such as the housefly, Musca, in the taxonomic order Diptera, zoological section Schizophora, subsection Calyptrata, the calyptra is a membranous rearward extension of the forewing; it covers the haltere. 0