-aceous

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.

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