-aceous Syllabification: (-aceous)Definition of -aceous suffix 1 Botany forming adjectives from nouns ending in -aceae (such as ericaceous from:Ericaceae) 2chiefly Biology & Geology forming adjectives describing similarity, especially in shape, texture, or color:arenaceous foliaceous olivaceousOrigin:from Latin -aceus, adjectival ending meaning 'of the nature of'-aceous in other Oxford dictionaries Definition of -aceous in the British & World English dictionary
