Wordnet 3.0
VERB (1)
1. 
 take the place or move into the position of; 
- Example: "Smith replaced Miller as CEO after Miller left"- Example: "the computer has supplanted the slide rule"- Example: "Mary replaced Susan as the team's captain and the highest-ranked player in the school"[syn: supplant, replace, supersede, supervene upon, supercede]
WordNet (r) 3.0 (2006):
supercede
    v 1: 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, supersede, supervene upon,
         supercede]