idempotent

[ ahy-duh m-poht-nt, id-uh m- ]
/ ˈaɪ dəmˈpoʊt nt, ˈɪd əm- /
Mathematics

adjective

unchanged when multiplied by itself.

noun

an idempotent element.

Origin of idempotent

First recorded in 1865–70; idem + potent1

British Dictionary definitions for idempotent

idempotent
/ (ˈaɪdəmˌpəʊtənt, ˈɪd-) /

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