Dictionary.com
definitions
  • synonyms

erosion

[ih-roh-zhuh n]
See more synonyms for erosion on Thesaurus.com
noun
  1. the act or state of eroding; state of being eroded.
  2. the process by which the surface of the earth is worn away by the action of water, glaciers, winds, waves, etc.
Show More

Origin of erosion

First recorded in 1535–45, erosion is from the Latin word ērōsiōn- (stem of ērōsiō). See erose, -ion
Related formse·ro·sion·al, adjectivean·ti·e·ro·sion, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for erosional

Historical Examples

  • This erosional process which has carved the mountains of Glacier Park has produced most of the mountains of the world.

    Glacier National Park [Montana]

    United States Dept. of the Interior


British Dictionary definitions for erosional

erosion

noun
  1. the wearing away of rocks and other deposits on the earth's surface by the action of water, ice, wind, etc
  2. the act or process of eroding or the state of being eroded
Show More
Derived Formserosive or erosional, adjective
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

Word Origin and History for erosional

erosion

n.

1540s, from Middle French erosion (16c.), from Latin erosionem (nominative erosio) "a gnawing away," noun of action from past participle stem of erodere "gnaw away," from ex- "away" (see ex-) + rodere "gnaw" (see rodent).

Show More
Online Etymology Dictionary, © 2010 Douglas Harper

erosional in Medicine

erosion

(ĭ-rōzhən)
n.
  1. Superficial destruction of a surface by friction, pressure, ulceration, or trauma.
  2. The wearing away of a tooth by chemical or abrasive action.odontolysis
Show More
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

erosional in Science

erosion

[ĭ-rōzhən]
  1. The gradual wearing away of land surface materials, especially rocks, sediments, and soils, by the action of water, wind, or a glacier. Usually erosion also involves the transport of eroded material from one place to another, as from the top of a mountain to an adjacent valley, or from the upstream portion of a river to the downstream portion.
Show More
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

erosional in Culture

erosion

A type of weathering in which surface soil and rock are worn away through the action of glaciers, water, and wind.

Show More
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.