caducous

[kuh-doo-kuhs, -dyoo-]

ca·du·cous

[kuh-doo-kuhs, -dyoo-]
adjective
1.
Botany. dropping off very early, as leaves.
2.
Zoology. subject to shedding.
3.
transitory; perishable.

Origin:
1675–85; < Latin cadūcus unsteady, perishable, equivalent to cad(ere) to fall + -ūcus adj. suffix; see -ous
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Caducous is always a great word to know.
So is bryophytes. Does it mean:
female reproductive organ which produces eggs in bryophytes, ferns and most gymnosperms
phylum of green, nonvascular, seedless plants comprised of true mosses, hornworts and liverworts
Collins
World English Dictionary
caducous (kəˈdjuːkəs)
 
adj
biology (of parts of a plant or animal) shed during the life of the organism
 
[C17: from Latin cadūcus falling, from cadere to fall]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Science Dictionary
caducous   (kə-d'kəs)  Pronunciation Key 
Detaching or dropping off at an early stage of development. The gills of most amphibians and the sepals or stipules of certain plants are caducous.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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