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adjective

deciduous

dih-SID-yoo-uss

Deciduous (adjective) means of a tree or shrub: shedding all its leaves each year, usually in autumn, and growing new ones in spring. Example: “Oak, maple and birch are deciduous, so the wood is bare by November.”

adjective
1
Of a tree or shrub: shedding all its leaves each year, usually in autumn, and growing new ones in spring.
"Oak, maple and birch are deciduous, so the wood is bare by November."
"They planted a deciduous hedge that turns copper in October."
2
Of a part of an animal or plant: falling off naturally at a particular stage of growth or season.
"A child's deciduous teeth are replaced by permanent ones from about the age of six."
"Deer shed their antlers, which are deciduous."

How to use deciduous

Learner’s notes

In plain EnglishLoses its leaves every year.

When to use it

Neutral; standard in biology, gardening and dentistry.

Memory tip

Deciduous and coniferous are not opposites: larch is a conifer that is also deciduous.

Trace the full origin ↓
Easily confused with
evergreen coniferous
Common pairings
deciduous tree deciduous woodland deciduous forest deciduous teeth
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Test yourself on “deciduous” A quick quiz — meaning, synonyms & usage

Fill the gap

Can you complete this real example?

Oak, maple and birch are _____, so the wood is bare by November.

Etymology

From Latin deciduus 'falling off', from decidere, formed from de- 'down' and cadere 'to fall'.

Origin: Latin

Related words

Rhymes for deciduous

See all rhymes for deciduous →

Frequently asked questions

What is the difference between deciduous and evergreen trees?

Deciduous trees drop all their leaves at once each year and stand bare for a season. Evergreens keep leaves or needles all year round, shedding and replacing them a few at a time so they never look bare.

Are deciduous teeth the same as baby teeth?

Yes. Deciduous teeth is the dental term for the first set of about twenty teeth, also called milk teeth or baby teeth, which fall out to make room for adult teeth.

Why do deciduous trees lose their leaves?

Dropping leaves saves water and energy through the cold, dark months, when photosynthesis would return little and frozen ground makes water hard to draw up.

What is the meaning of deciduous?

"deciduous" (adjective) means of a tree or shrub: shedding all its leaves each year, usually in autumn, and growing new ones in spring.

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Definitions: FreeDict original editorial · etymology from FreeDict original editorial