trigraph
noun
tri·graph
| \ ˈtrī-ˌgraf
\
\
Definition of trigraph
1
: three letters spelling a single consonant, vowel, or diphthong
eau of beau is a trigraph
2
: a cluster of three successive letters
the, ion, and ing are high frequency trigraphs
Other Words from trigraph
trigraphic
\ (ˌ)trī-ˈgra-fik
\
adjective
\
adjective
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