| digraph |
| Definition: When two graphemes are used together to represent one phoneme. |
| Example: The sh in ship is a digraph. |
| Etymology: The word was coined by combining the Greek di, twice, with the Greek graphe, writing. |
| Oxford English Dictionary: The first OED citation is from 1788: "All improper diphthongs, or, as I have called them, digraphs, are changed into the single vowels which they stand for." (T. Sheridan (L.)) |