noun \i-ˈrō-zhən\

: the gradual destruction of something by natural forces (such as water, wind, or ice) : the process by which something is eroded or worn away

Full Definition of EROSION

a :  the action or process of eroding
b :  the state of being eroded
:  an instance or product of erosion
ero·sion·al \-ˈrōzh-nəl, -ˈrō-zhə-nəl\ adjective
ero·sion·al·ly \-ē\ adverb

Examples of EROSION

  1. Landscapers planted grass to stop the erosion of the hillside.
  2. Centuries of erosion by wind have carved grooves in the rocks.

First Known Use of EROSION


Other Geology Terms

anthracite, boulder, cwm, erratic, igneous, intrusive, mesa, sedimentary, silt, swale

Rhymes with EROSION


noun \i-ˈrō-zhən\   (Medical Dictionary)

Medical Definition of EROSION

a : the superficial destruction of a surface area of tissue (as mucous membrane) by inflammation, ulceration, or trauma <erosion of the uterine cervix> b : progressive loss of the hard substance of a tooth
: an instance or product of erosion <a circular erosion on the skin>


noun    (Concise Encyclopedia)

Removal of surface material from the Earth's crust and transportation of the eroded materials by natural agencies from the point of removal. Erosion is caused by wind action, river and stream processes, marine processes (sea waves), and glacial processes. The complementary actions of erosion and deposition or sedimentation operate through wind, moving water, and ice to alter existing landforms and create new landforms. Erosion will often occur after rock has been disintegrated or altered through weathering. Moving water is the most important natural agent of erosion. Sea wave erosion results primarily from the impact of waves striking the shore and the abrasive action of sand and pebbles agitated by wave action. Erosion by rivers is caused by the scouring action of the sediment-containing flowing water. Glacial erosion occurs by surface abrasion as the ice, embedded with debris, moves slowly over the ground accompanied by the plucking of rock from the surface. Wind plays a key role in arid regions as blowing sand breaks down rock and dislodges surface sand from unprotected sand dunes. Human intervention, as by the removal of natural vegetation for farming or grazing purposes, can lead to or accelerate erosion by wind and water. See also sheet erosion.


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