The word "桦甸" is formed by combining the character "桦", which is a phono-semantic compound where "木" (tree) indicates its semantic category related to trees, specifically birch, and "华" provides approximate phonetic guidance, with the character "甸", which is ideographic, combining "田" (field) and "勹" (enclosing) to convey meanings like suburb or cultivated land, together creating a place name that likely references a geographical area characterized by birch trees and fields.