etchplanation en · NOUN
Etymology
From etch + planation.
Meanings
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(uncountable) The process of subsurface weathering or etching which creates etchplains.
Deep weathering and etchplanation can occur in the humid sub-tropics (Tricart, 1972) and a humid sub-tropical Britain in Tertiary times is possible.
1985, Richard Hugh Johnson, The Geomorphology of North-west England, page 52: