Su·per·sede v. t. [imp. & p. p. Superseded p. pr. & vb. n. Superseding.]
  1. To come, or be placed, in the room of; to replace.
  2. To displace, or set aside, and put another in place of; as, to supersede an officer.
  3. 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.
     Nothing is supposed that can supersede the known laws of natural motion.   --Bentley.
  4. Old Law To omit; to forbear.
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