noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   The formation of a flat surface by erosion and deposition countable, uncountable
2. 2
   the process of erosion whereby a level surface is produced wordnet
3. 3
   The morphological transformation of a three-dimensional structure into a two-dimensional one through development or evolution countable, uncountable

Etymology

From plane + -ation.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.