Did you know?

Click any word in a definition or example to find the entry for that word

American pronunciation of 


view main entry for ISDN noun  /ˌaɪ es di ˈen/
British English pronunciation: ISDN
Click to listen to the pronunciation of ISDN

This is the American English pronunciation of ISDN.

View British English pronunciation of ISDN.

Previous and next

Open Dictionary

patio diplomacy

high-level diplomats meeting and dining in an informal environment e.g. a party or club

add a word


A must for anyone with an interest in the changing face of language. The Macmillan Dictionary blog explores English as it is spoken around the world today.

global English and language change from our blog
Macmillan learn live love play