To come, or be placed, in the room of; to replace.

To make void, inefficacious, or useless, by superior power, or by coming in the place of; to set aside; to render unnecessary; to suspend; to stay.

take the place or move into the position of; "Smith replaced Miller as CEO after Miller left"; "the computer has supplanted the slide rule"; "Mary replaced Susan as the team's captain and the highest-ranked player in the school"

This word supersedes all others in perversity. As if we don"t have enough to worry about, keeping words on -ceed and -cede ("succeed," "precede," etc.) straight in our minds, this one has to be different from all the rest. The good news is: this is the only English word based on this stem spelled -sede.

To omit; to forbear.

To displace, or set aside, and put another in place of; as, to supersede an officer.

To cause to be set aside, especially to displace as inferior.

See until superseded.