a. The use of more words than are required to express an idea; redundancy.
b. An instance of pleonasm.
2. A superfluous word or phrase.
[Late Latin pleonasmus, from Greek pleonasmos, from pleonazein, to be excessive, from pleōn, more; see pelə-1 in the Appendix of Indo-European roots.]
ple′o·nastic (-năstĭk) adj.
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