Planation is a 9 letter English word. It's valid Words with friends word worth 15 points.
You can make 338 anagrams from letters in planation (aailnnopt).
First recorded in 1875-80; plane1 + -ation
He may have been misled by other ministers, and for his benefit I make this ex- planation.
These changes probably included stream capture, flooding, drought, uplifting and planation.
The planation and striation of a stone need not be confined to its under surface.