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-aceous

  1. 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.


-aceous

suffix forming adjectives

  1. relating to, belonging to, having the nature of, or resembling

    herbaceous

    larvaceous

“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


–aceous

  1. A suffix used to form adjectives meaning “made of” or “resembling” a particular substance or material, such as silicaceous, containing silicon.


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Word History and Origins

Origin of -aceous1

< Latin -āceus; -ous
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Word History and Origins

Origin of -aceous1

New Latin, from Latin -āceus of a certain kind; related to -āc, -āx, adjectival suffix

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