1. To take the place of; especially, through force or plotting: Although Jane fought against it, the board of directors supplanted her administrative position with another more qualified person.
2. To remove or uproot in order to replace with something else: The lexicographer, Mr. Johnson, was asked if he thought online dictionaries would be supplanting printed formats.
3. Etymology: via Old French suppplanter, from Latin supplantare, "to trip up"; hence "to overthrow" is a compound verb that is formed from the prefix sub-, "up from under" and planta, "sole of the foot" and so it seems to be indirectly related to the term plant.