IPA: /ˈɡræfiːm/
KK: /ˈgræfiːm/
A basic unit of a writing system, such as a letter or a combination of letters that represent a sound.
In the word 'cat', the letters 'c', 'a', and 't' are all graphemes.
Grapheme → It is formed from 'grapho-' (from Greek 'grapho', meaning to write) and '-eme' (from Greek 'eme', meaning a unit). The word 'grapheme' refers to the smallest unit of a writing system, essentially a written symbol.
Think of 'writing' ('grapho-') as the action and 'unit' ('-eme') as a single piece — a grapheme is a single written symbol in a language.