A heptagraph (from Ancient Greek: ἑπτά, heptá 'seven' and γράφω, gráphō 'write') is a sequence of seven letters used to represent a single sound (phoneme), or a combination of sounds, that do not correspond to the individual values of the letters. Heptagraphs are extremely rare.
A heptagraph (from Ancient Greek: ἑπτά, heptá 'seven' and γράφω, gráphō 'write') is a sequence of seven letters used to represent a single sound (phoneme), or a combination of sounds, that do not correspond to the individual values of the letters. Heptagraphs are extremely rare.
Source: Wikipedia "Heptagraph" · CC BY-SA 4.0
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