-aceae

Botany.

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

   Rosaceae.

-aceae

suffix forming plural proper nouns

1. denoting plants belonging to a family

   Liliaceae

   Ranunculaceae

Word History and Origins

Origin of -aceae¹

< Latin, feminine plural of -āceus. See -aceous

Word History and Origins

Origin of -aceae¹

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