Initialism Definition

ĭ-nĭshə-lĭzəm
noun
An acronym or abbreviation formed from initial letters, specif., one pronounced using the letters' names rather than phonetically (Ex.: CD, DNA, FBI)
Webster's New World

Other Word Forms of Initialism

Noun

Singular:
initialism
Plural:
initialisms

Origin of Initialism

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initialism