History
The concept was introduced in '' PanzerBlitz'', though the number of configurations was low. This is the moment when "geo-morphic" gets in wargaming its peculiar meaning. The back of the game box described among the contents a “three section ‘Geo-Morphic’ mapboard which can be rearranged to form dozens of different terrain configurations”. Geo-morphic was there used in the established sense of "resembling the earth and its surface features." But several gamers thought that "can be rearranged to form dozens of different terrain configurations" was the explanation of that unusual adjective, and from then onward the possibility to rearrange pieces became part of the definition of "geo-morphic" among wargamers. Even game publishers started using the word with this new meaning on their printed material, so that the use became widespread and somehow "official" in the hobby community. ManyReferences
Board wargames {{wargame-stub