1. Plural of diagraph; a pair of letters or characters used together to represent a single sound or concept in writing or printing.
Usage: linguistics; also called digraph
2. Plural of diagraph; an instrument or device for drawing or recording diagrams or graphs.
Usage: technical; rare

Examples

• In English, diagraphs like 'ch' and 'sh' represent single sounds.
• The letter combinations 'th' and 'ph' are common diagraphs in English.
• Students learn to recognize diagraphs early in their reading instruction.
• Many European languages use diagraphs to represent sounds not found in English.
• The word 'through' contains the diagraph 'th' at the beginning.