Longman Dictionary of Contemporary English homepage

Date: 1400-1500
Language: Old French
Origin: superseder 'to not do something', from Latin supersedere 'to be better than, not do something', from sedere 'to sit'

supersede

 verb
     
su‧per‧sede [transitive]
if a new idea, product, or method supersedes another one, it becomes used instead because it is more modern or effective [= replace]:
Their map has since been superseded by photographic atlases.
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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