Dictionary.com

calyptra

[ kuh-lip-truh ]
/ kəˈlɪp trə /
Save This Word!

noun Botany.
Also called cap. a hood or hoodlike part, as the lid of the capsule in mosses.
a root cap.
QUIZ
FIRE UP YOUR VOCAB FOR A "RED" SYNONYMS QUIZ
No fire engine reds here, only a fierce collection of vibrant words for the color red to test yourself on.
Question 1 of 7
What does "amaranth" mean?
Meet Grammar CoachWrite or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing
Meet Grammar CoachImprove Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help

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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use calyptra in a sentence

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-lĭptrə ]

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.
FEEDBACK