caducous

caducous

[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

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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
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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
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