I. ˈplāˌnāt adjective
Etymology: Late Latin planatus, past participle of planare to flatten, level, from Latin planus flat — more at floor
: flattened, plane
recognizes that there is a planate bedrock surface beneath the gravels — K.M.Hussey
II. transitive verb
( -ed/-ing/-s )
Etymology: back-formation from planation
: to erode to a plain : plane
former low domes were planated by wave erosion — Journal of Geology