Trigraph

A trigraph (en français, trigramme ; em português, trígrafo) is a group of three letters used to represent a single sound or a combination of sounds that does not correspond to the written letters combined. The Latin-based orthographies for some languages include trigraphs, and in some cases they may be treated as single characters in collation. See also digraph.

References

• Wikipedia
  • AF "Trigraaf (ortografie)" https://af.wikipedia.org/wiki/Trigraaf_%28ortografie%29
  • EN "Trigraph (orthography)" https://en.wikipedia.org/wiki/Trigraph_%28orthography%29
  • FR "Trigramme" https://fr.wikipedia.org/wiki/Trigramme
  • PT "Trígrafo" https://pt.wikipedia.org/wiki/Trígrafo