Trigraph is a related term of tetragraph.
As nouns the difference between trigraph and tetragraph
is that trigraph is (linguistics) a specific sequence of three letters, especially one used collectively to represent a single phoneme while tetragraph is a group of four letters.
trigraph
English
Noun
(
en noun)
(linguistics) A specific sequence of three letters, especially one used collectively to represent a single phoneme.
Related terms
* triphthong
* ligature
tetragraph
English
Noun
(
en noun)
A group of four letters.
Related terms
* digraph
* trigraph