Definition of -aceous 

1a : characterized by : full of setaceous

b : consisting of diatomaceous : having the nature or form of tuffaceous

2a : of or relating to a group of animals typified by (such) a form cetaceous or characterized by (such) a feature crustaceous

b : of or relating to a plant family solanaceous

History and Etymology for -aceous

borrowed from Latin -āceus "having the nature of," extended form of -eus, going back to *ei̯os

Note: Latin -āceus is an extension of the suffix -eus, meaning "being made of, consisting of," usually applied to a noun designating a material (aureus, argenteus, etc.). Earlier attested derivatives, from Cato and Varro, are from names of plants or plant-based substances (hederāceus, cf. hedera "ivy"; mustāceus/mustāceum "cake made with must (mustum) and ivy leaves"; vīnāceus "refuse from wine pressing"; bētāceus, cf. bēta "beet"; farrāceus, cf. farr, farris "emmer"; lolleāceus, cf. lolium "darnel." Contrasting with these are the jocular formations gallīnāceus ("of poultry"; cf. gallīna "hen") and Gēryonāceus (cf. Gēryōn, a mythical monster) in Plautus. The origin of the -āc- formative is uncertain. It has been suggested that the basis was re-segmentation of a hypothetical *portulāceus, from portulāca, "purslane"—something of a stretch, though it does point to the possible relevance of -ācus or -āca as a suffix itself.

Keep scrolling for more

Learn More about -aceous

Dictionary Entries near -aceous

acenesthesia

acentric

acentrous

-aceous

acephal

Acephala

acephalan

Statistics for -aceous

Look-up Popularity

Comments on -aceous

What made you want to look up -aceous? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

occurring twice a year or every two years

Get Word of the Day daily email!

Test Your Vocabulary

Name that Food Quiz

True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!