idempotent

[ahy-duh m-poht-nt, id-uh m-]Mathematics

adjective

unchanged when multiplied by itself.

noun

an idempotent element.

Nearby words

  1. ideation,
  2. ideational,
  3. ideational apraxia,
  4. ideatum,
  5. idem,
  6. ident,
  7. identi-kit,
  8. identic,
  9. identical,
  10. identical proposition

Origin of idempotent

First recorded in 1865–70; idem + potent1

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019


British Dictionary definitions for idempotent

idempotent

adjective

maths (of a matrix, transformation, etc) not changed in value following multiplication by itself

Word Origin for idempotent

C20: from Latin idem same + potent 1

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for idempotent

idempotent

1870, from Latin idem "the same" + potentem "powerful" (see potent).

Online Etymology Dictionary, © 2010 Douglas Harper