from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A word formed from the initial letters of a name, such as WAC for Women's Army Corps, or by combining initial letters or parts of a series of words, such as radar for radio detecting and ranging.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An abbreviation formed by (usually initial) letters taken from a word or series of words, that is itself pronounced as a word, such as RAM, radar, or scuba; sometimes contrasted with initialism.
- n. A pronounceable word formed from the beginnings (letter or syllable) of other words and thus representing the phrase so formed, e.g. Benelux = the countries Belgium, Netherlands and Luxembourg considered as a political or economic whole.
- n. Any abbreviation so formed, regardless of pronunciation, such as TNT, IBM, or XML.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a word formed from the initial letters of the several words in the name
acr(o)- + -onym.(American Heritage® Dictionary of the English Language, Fourth Edition)
acro- + -onym c. 1943 (Wiktionary)