IPA: /ˈtraɪɡræf/
KK: /ˈtraɪɡræf/
A set of three letters that appear together in a word, often representing a single sound or combination of sounds.
In the word 'through', the letters 'ough' form a trigraph.
Trigraph → It is formed from 'tri-' (meaning three) and 'graph' (from Greek 'grapho', meaning to write). A trigraph refers to a group of three letters that together represent a single sound in a word.
Think of 'three' ('tri-') letters that 'write' ('graph') a single sound together — that's what a trigraph is.