Relating to, having the characteristics of, or resembling trees or woody plants.
From Latin arbor (tree) plus the suffix -aceous (having the qualities of), which comes from Latin -āceus. This suffix is used in botanical and scientific terminology to describe characteristics.
The -aceous suffix appears in dozens of botanical terms: herbaceous, rosaceous, cretaceous. Scientists use it to classify plants into families based on shared features. It's like a linguistic filing system that lets naturalists instantly communicate what something is related to.
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