Definition of -aceous in English:

-aceous

suffix

  • 1Botany
    Forming adjectives from nouns ending in -aceae (such as ericaceous from.

    ‘Ericaceae’
  • 2Geology Biology
    Forming adjectives describing similarity, especially in shape, texture, or color.

    ‘arenaceous’
    ‘olivaceous’
    ‘foliaceous’

Origin

From Latin -aceus ‘of the nature of’ + -ous.