- a group of three letters representing a single speech sound, as eau in beau.
Origin of trigraph
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Examples from the Web for trigraph
Historical Examples of trigraph
Trigraph, trī′graf, n. a combination of three letters sounded as one, a triphthong.
- a combination of three letters used to represent a single speech sound or phoneme, such as eau in French beau
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012