- An abbreviation formed by (usually initial) letters taken from a word or series of words, and which is itself pronounced as a word, such as RAM, radar, or scuba; sometimes contrasted with initialism.
- Any abbreviation so formed, regardless of pronunciation, such as TNT, IBM, or XML.
Etymology: From acro- "sharp, high" + -onym "name", modelled after homonym and synonym. From Ancient Greek (polytonic, á) (akros) "extremity" and (polytonic, á) "name".
- Dutch: letterwoord(nl, acroniem, n}}, t-, nl)n
- French: acronyme(fr)m
- German: Akronym(de)n
- Italian: acronimo(it)m
- Spanish: acrónimo(es)m
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