Mono- is used at the beginning of nouns and adjectives that have ‘one’ or ‘single’ as part of their meanings.
...high in ~unsaturated fats.
...interaction between bilingual parents and monolingual teachers.
PREFIX
MONO-
Meaning of MONO- in English
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012