-aceous

-aceous

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 (ceraceous ), especially adjectival correspondents to taxonomic names ending in -acea, and -aceae:, rosaceous .

Origin:
< Latin -āceus; see -ous

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World English Dictionary
-aceous
 
suffix forming adjectives
relating to, belonging to, having the nature of, or resembling: herbaceous; larvaceous
 
[New Latin, from Latin -āceus of a certain kind; related to -āc,-āx, adjectival suffix]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
-aceous  
A suffix used to form adjectives meaning "made of" or "resembling" a particular substance or material, such as silicaceous, containing silicon.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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