MEANING
A fan-shaped spread of sediment deposited where a stream leaves a confined steep course for flatter ground.
Use it for
Words that belong together
- gravel alluvial fan
- active alluvial fan
On the page
A gravel alluvial fan spread below the canyon mouth.
The active alluvial fan changed channels after each storm.
Related words
Word forms
- Base
- alluvial fan
Usage notes
Primary category: environment. Forms: Singular alluvial fan; plural alluvial fans. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings.
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