imaginary unit

noun

Definition of imaginary unit

  1. :  the positive square root of minus 1 denoted by i or + √‒̅1̅

Circa 1911

First Known Use of imaginary unit

circa 1911


Seen and Heard

What made you want to look up imaginary unit? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

not embarrassed or apologetic

Get Word of the Day daily email!

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!