Definition of idempotent
: relating to or being a mathematical quantity which when applied to itself under a given binary operation (as multiplication) equals itself; also : relating to or being an operation under which a mathematical quantity is idempotent
Origin and Etymology of idempotent
Latin idem same + potent-, potens having power — more at potent
First Known Use: 1870
Seen and Heard
What made you want to look up idempotent? Please tell us where you read or heard it (including the quote, if possible).