Definition of -aceous in English:

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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 olivaceous


From Latin -aceus, adjectival ending meaning 'of the nature of'.

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Syllabification: -aceous

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