calyptra

[ kuh-lip-truh ]

/ kəˈlɪp trə /

noun Botany.

Also called cap. a hood or hoodlike part, as the lid of the capsule in mosses.

a root cap.

Origin of calyptra

1745–55; <New Latin <Greek kalýptra veil, covering, equivalent to kalýp(tein) to veil, cover + -tra noun suffix

OTHER WORDS FROM calyptra

ca·lyp·trate

[kuh-lip-treyt], /kəˈlɪp treɪt/, adjective

Words nearby calyptra

Calydonian boar, Calydonian hunt, Calymmatobacterium, Calypso, calypsonian, calyptra, calyptrogen, calyx, Calzaghe, calzone, cam

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for calyptra

Capsule filling the involucre, circumscissile in the middle, the calyptra persistent at its base.
The Manual of the Botany of the Northern United States|Asa Gray
If not preserved in an envelope the calyptra and operculum are very apt to fall off and become lost.
Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 3|Various
In Calyptra Equestris, it has two prominent points, and is described as bi-furcated (fig. 18).
A Conchological Manual|George Brettingham Sowerby
Calyp′trate, furnished with such; Calyp′triform, Calyptrimor′phous, having the form of a calyptra.
Chambers's Twentieth Century Dictionary (part 1 of 4: A-D)|Various

The calyptra or veil is remarkably small, smooth, and membranous.
Lachesis Lapponica|Carl von Linn

British Dictionary definitions for calyptra

calyptra

/ (kəˈlɪptrə) /

noun botany

a membranous hood covering the spore-bearing capsule of mosses and liverworts

any hoodlike structure, such as a root cap

Derived forms of calyptra

calyptrate (kəˈlɪpˌtreɪt), adjective

Word Origin for calyptra

C18: from New Latin, from Greek kaluptra hood, from kaluptein to cover

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for calyptra

calyptra

[ kə-lĭp′trə ]

In some bryophyte plants, a structure that covers the young sporophyte as it develops within the tissues of its gametophyte parent. The calyptra, which consists of a thickening of the archegonium walls, eventually breaks open as the spore capsule grows.

See root cap.

单词	calyptra
释义	calyptra [ kuh-lip-truh ] / kəˈlɪp trə / noun Botany. Also called cap. a hood or hoodlike part, as the lid of the capsule in mosses. a root cap. Origin of calyptra 1745–55; <New Latin <Greek kalýptra veil, covering, equivalent to kalýp(tein) to veil, cover + -tra noun suffix OTHER WORDS FROM calyptra ca·lyp·trate [kuh-lip-treyt], /kəˈlɪp treɪt/, adjective Words nearby calyptra Calydonian boar, Calydonian hunt, Calymmatobacterium, Calypso, calypsonian, calyptra, calyptrogen, calyx, Calzaghe, calzone, cam Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for calyptra Capsule filling the involucre, circumscissile in the middle, the calyptra persistent at its base. The Manual of the Botany of the Northern United States\|Asa Gray If not preserved in an envelope the calyptra and operculum are very apt to fall off and become lost. Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 3\|Various In Calyptra Equestris, it has two prominent points, and is described as bi-furcated (fig. 18). A Conchological Manual\|George Brettingham Sowerby Calyp′trate, furnished with such; Calyp′triform, Calyptrimor′phous, having the form of a calyptra. Chambers's Twentieth Century Dictionary (part 1 of 4: A-D)\|Various The calyptra or veil is remarkably small, smooth, and membranous. Lachesis Lapponica\|Carl von Linn British Dictionary definitions for calyptra calyptra / (kəˈlɪptrə) / noun botany a membranous hood covering the spore-bearing capsule of mosses and liverworts any hoodlike structure, such as a root cap Derived forms of calyptra calyptrate (kəˈlɪpˌtreɪt), adjective Word Origin for calyptra C18: from New Latin, from Greek kaluptra hood, from kaluptein to cover Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for calyptra calyptra [ kə-lĭp′trə ] In some bryophyte plants, a structure that covers the young sporophyte as it develops within the tissues of its gametophyte parent. The calyptra, which consists of a thickening of the archegonium walls, eventually breaks open as the spore capsule grows. See root cap. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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