- bio aff. a suffix with the meanings “resembling, having the nature of,”“made of,” occurring in loanwords from Latin (cretaceous; herbaceous) and forming adjectives in English on the Latin model, esp. adjectival correspondents to taxonomic names ending in -acea and -aceae:
rosaceous•Etymology: < L -āceus; see -ous
From formal English to slang. 2014.