The act of superseding; the fact of having been superseded.(noun)
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Use "supersession" in a sentence
"In other words, this book offers a new theory that is, the supersession theory of computing to go beyond the existing approaches in the literature on computing in an original way."
"Among them was Stratify, who sponsored a "supersession" called "Whatever Happened to Rule 1?""
"Moogy went on to, among myriad accomplishments, front his own bands; become a founding member of Todd Rundgren's Utopia; participate in the "lost" supersession Music from Free Creek with Eric Clapton, Jeff Beck, Dr. John, Linda Ronstadt and other superstars; and produce the Dylan-Midler duet of "Buckets of Rain" for Bette's album "Songs from the New Depression.""