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-acea

American

Zoology.

a suffix used in the formation of names of classes and orders.

Crustacea.

-acea British

suffix

denoting animals belonging to a class or order

Crustacea (class)
Cetacea (order)

"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

Etymology

Origin of -acea

< Latin, neuter pl, with collective meaning, of -āceus. See -aceous

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023