A multigraph is a seven-letter sequence of letters that behaves as a unit and is not the sum of its parts, such as the seven-letter German sequence ⟨schtsch⟩, used to transliterate Russian ⟨щ⟩, as in ⟨Borschtsch⟩ for ⟨борщ⟨⟩ "borscht

Borscht

Borscht is a soup of Ukrainian origin that is popular in many Eastern and Central European countries. In most of these countries, it is made with beetroot as the main ingredient, giving it a deep reddish-purple color...

". ⟨Schtsch⟩, as the transliteration of ⟨щ⟩, thus represents the voiceless alveolo-palatal fricative /ɕɕ/, similar to the pronunciation of ⟨sh⟩ in sheep (but longer

Gemination

In phonetics, gemination happens when a spoken consonant is pronounced for an audibly longer period of time than a short consonant. Gemination is distinct from stress and may appear independently of it....

).

The Juu languages have been claimed to have a heptagraph ⟨dts’kx’⟩, but this is also a sequence, of ⟨dts’⟩ and ⟨kx’⟩.

See also

• Multigraph (orthography)
  Multigraph (orthography)
  A multigraph is a sequence of letters that behaves as a unit and is not the sum of its parts, such as English ⟨ch⟩ or French ⟨eau⟩. The term is infrequently used, as the number of letters is usually specified:*Digraph...
  
  
• Digraph
  Digraph (orthography)
  A digraph or digram is a pair of characters used to write one phoneme or a sequence of phonemes that does not correspond to the normal values of the two characters combined...
  
   (two letters, as ⟨ch⟩ or ⟨ea⟩)
• Trigraph
  Trigraph (orthography)
  A trigraph 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. For example, in the word schilling, the trigraph sch represents the voiceless postalveolar fricative , rather than the consonant cluster...
  
   (three letters, as ⟨tch⟩ or ⟨eau⟩)
• Tetragraph
  Tetragraph
  A tetragraph is a sequence of four letters used to represent a single sound , or a combination of sounds, that do not necessarily correspond to the individual values of the letters. In German, for example, the tetragraph tsch represents the sound of the English digraph ch...
  
   (four letters, as German ⟨tsch⟩)
• Pentagraph
  Pentagraph
  A pentagraph is a sequence of five letters used to represent a single sound , or a combination of sounds, that do not necessarily correspond to the individual values of the letters...
  
   (five letters)
• Hexagraph
  Hexagraph
  A hexagraph is a sequence of six letters used to represent a single sound , or a combination of sounds that do not correspond to the individual values of the letters...
  
  (six letters)