'Supersession' definitions:
Definition of 'supersession'
(from WordNet)
noun
Act of replacing one person or thing by another especially one held to be superior [syn: supersedure, supersession]
Definition of 'Supersession'
From: GCIDE
- Supersession \Su`per*ses"sion\, n. [Cf. OF. supersession. See Supersede.] The act of superseding, or the state of being superseded; supersedure. [1913 Webster]
- The general law of diminishing return from land would have undergone, to that extent, a temporary supersession. --J. S. Mill. [1913 Webster]