Also found in: Thesaurus, Encyclopedia, Wikipedia.


The process of erosion and deposition in which a nearly level surface is produced, as by streams, wind, or ocean currents.

[Latin plānum, flat surface; see plane1 + -ation.]


(Geological Science) the erosion of a land surface until it is basically flat


(pleɪˈneɪ ʃən, plə-)

the erosional work done by streams that contributes to gradation of the land surface.


the formation of a flat or level surface by the process of erosion.
See also: Earth
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.planation - the process of erosion whereby a level surface is produced
eating away, eroding, erosion, wearing, wearing away - (geology) the mechanical process of wearing or grinding something down (as by particles washing over it)
References in periodicals archive ?
Tenders are invited for raising of avenue planation and fixing of tree guards in different areas of zone-v including digging pits and planting the avenue plants at various places in gajuwaka zone of gvmc.
putoria, especially in the sugarcane planation and rainforest fragment where the 3 species combined represented 99% and 98%, respectively, of all adults of Calliphoridae (Table 4).
A large number of people from different walks of life were also present at the planation ceremony at forest colony battagram.
Talking to reporter, CDA's Member Environment Mustafain Kazmi said the spring tree planation drive would be named after the martyrs of Army Public School Peshawar.
In 1653, the Lancaster Planation included Boylston,Harvard, Stow, Bolton, Hudson, Marlboro, Leominster, Clinton and Berlin.
Furious record label execs gave him a dressing down, he responded with a bizarre online meltdown and now he planation.
The wedding was held at the historic Boone Hall Planation in Mount Pleasant, S.
The major elements of the study area's relief are represented by planation surfaces, glacial and periglacial landforms.
Reviews of themes that relate to east Asia and Australia are the next set of conference papers in the volume, beginning with a paper on one hundred years of investigation on the planation surfaces in China by K.
Frustration among backbenchers boiled over at the cabinet when Alistair Dow, who chairs the main scrutiny committee, said some of the promised savings should have been easily achieved and asked for an ex-x planation.
This suggests that a habitat rather than a year effect is more likely for the ex planation in differences in EPP and secondary mate attraction rates.
The Krovili mound is located in the interior at a distance of some 12km from the coast (as the crow flies), where it stands in the middle of ah old planation surface at ah elevation of 72m.