[ ih-nish-uh-liz-uhm ]

  1. a set of initials representing a name, organization, or the like, with each letter pronounced separately, as FBI for Federal Bureau of Investigation.

  1. the practice of using initials or forming words from initials.

Origin of initialism

First recorded in 1895–1900; initial + -ism

Grammar notes for initialism

Words that may be confused with initialism

Words Nearby initialism Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023