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Welcome to the Speech Internet Dictionary (SID). The aim of SID is to provide concise definitions of technical terms used in phonetics, phonology, speech and hearing science and allied disciplines. Where appropriate, SID aims also to give examples, provide illustrations and sound clips. For some terms, references for further exploration of a topic are also provided. If you find that the term you are looking for is not given, please contact us and we will consider adding it.

SID is a product of the SIPhTrA project, funded by The Higher Education Funding Council for England and the Department of Education for Northern Ireland.

SID is edited by John Maidment to whom all enquiries, suggestions, comments should be directed. Please visit my blog.

Disclaimer Every effort has been made to ensure that entries in SID are accurate, but we can accept no responsibility for mental anguish (or anything else) caused by using the dictionary.

This updated and redesigned version of SID uses Unicode symbols.

John Maidment, October 2009

Last updated: 2006-10-09