a suffix used in the formation of names of families: Rosaceae.

Nearby words

Origin of -aceae

< Latin, feminine plural of -āceus. See -aceous
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British Dictionary definitions for -aceae


suffix forming plural proper nouns

denoting plants belonging to a familyLiliaceae; Ranunculaceae

Word Origin for -aceae

New Latin, from Latin, feminine plural of -āceus -aceous
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