follow Dictionary.com

"You canker blossom!" 3 Shakespearean Insults

alluvial fan

noun, Physical Geography
1.
a fan-shaped alluvial deposit formed by a stream where its velocity is abruptly decreased, as at the mouth of a ravine or at the foot of a mountain.
Also called alluvial cone.
Origin of alluvial fan
1870-1875
1870-75
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the web for alluvial fan
  • The portion of the crater within the landing area has an alluvial fan likely formed by water-carried sediments.
  • Repeated debris flows and/or floods deposit sediment at the mouth of a canyon, forming an alluvial fan.
  • They typically travel at great speeds down steep canyons, but may move slowly across a gentle surface of an alluvial fan.
British Dictionary definitions for alluvial fan

alluvial fan

noun
1.
a fan-shaped accumulation of silt, sand, gravel, and boulders deposited by fast-flowing mountain rivers when they reach flatter land
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
Cite This Source
alluvial fan in Science
alluvial fan
  (ə-l'vē-əl)   
A fan-shaped mass of sediment, especially silt, sand, gravel, and boulders, deposited by a river when its flow is suddenly slowed. Alluvial fans typically form where a river pours out from a steep valley through mountains onto a flat plain. Unlike deltas, they are not deposited into a body of standing water.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of the Day

Difficulty index for alluvial fan

Few English speakers likely know this word

Word Value for alluvial

11
16
Scrabble Words With Friends

Nearby words for alluvial fan