
(compact disc read-only memory pronounced /si: di: ˈrɒm/) (joint photographic experts group /ˈdʒeɪpeg/) She sent me a jpeg file with a photo of her wedding. Some acronyms are pronounced as a combination of letters and syllables: Radar was one of the most important inventions of the twentieth century.

The ship’s radar had been destroyed in battle. Where the acronym has existed for a long time and become fully established in the language, it is written with small letters (or with one capital letter if it is at the beginning of a sentence): Jodie’s got her SATs next week – she’s a bit nervous. Newer acronyms are written with capital letters : SATs /sæts/ standard attainment tests (tests taken by schoolchildren in the UK)

Radar /ˈreɪdɑ(r)/ radio detection and ranging Scuba /ˈsku:bə/ self-contained underwater breathing apparatus NATO /ˈneɪtəʊ/ North Atlantic Treaty Organisation Acronyms are words which are formed from the first letters of other words, and which are pronounced as full words.
