Supersede \Su`per*sede"\, v. t. [imp. & p. p. Superseded; p. pr. & vb. n. Superseding.]

[L. supersedere, supersessum, to sit above, be superior to, forbear, omit; super above + sedere to sit: cf. F. supers['e]der. See Sit, and cf. Surcease.]

1. To come, or be placed, in the room of; to replace. [1913 Webster]

2. To displace, or set aside, and put another in place of; as, to supersede an officer. [1913 Webster]

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. [1913 Webster]

Nothing is supposed that can supersede the known laws of natural motion. --Bentley. [1913 Webster]

4. (Old Law) To omit; to forbear. [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

29 Moby Thesaurus words for "supersede": abandon, act for, change places with, crowd out, cut out, desert, discard, displace, double for, fill in for, forsake, ghost, ghostwrite, oust, pinch-hit, reject, relieve, replace, represent, repudiate, spell, spell off, stand in for, subrogate, substitute for, succeed, supplant, swap places with, understudy for

Source: Moby Thesaurus II by Grady Ward, 1.0
 

supersede v : 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" [syn: supplant, replace, supervene upon]

Source: WordNet (r) 2.0
 

Supersede \Su`per*sede"\, v. t. [imp. & p. p. Superseded; p. pr. & vb. n. Superseding.]

[L. supersedere, supersessum, to sit above, be superior to, forbear, omit; super above + sedere to sit: cf. F. supers['e]der. See Sit, and cf. Surcease.]

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.

Source: Webster's Revised Unabridged Dictionary (1913)