diagraphs

/ˈdaɪəˌɡræfs/
noun
  1. Plural of diagraph; pairs of letters representing a single sound.
    • Common diagraphs in English include 'sh', 'ch', 'th', and 'ph'.
    • Learning diagraphs helps children decode new words more easily.
    • The worksheet listed several diagraphs for the students to practice.
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