prefixnoun [ C ]uk /ˈpriː.fɪks/ us /ˈpriː.fɪks/
prefix noun [ C ] (GRAMMAR)
- 'un' is one of the most common prefixes in English.
- A suffix is added at the end of a word, and a prefix is added to the beginning.
- Prefixes can be used to create new words in English.
- 'Eco-' is a prefix used to mean 'relating to the environment'.
- The prefixes 'in-', 'im-', 'il-' and 'ir-' all mean 'not'.