Relating to or belonging to the Caryocaraceae family of tropical South American trees.
From 'Caryocaraceae' (family name) plus '-ous' (forming adjectives). Standard botanical terminology for describing things that belong to a plant family.
The '-aceous' suffix in botany marks family membership—'rosaceous' means 'of the rose family,' 'caryocaraceous' means 'of the caryocar family,' creating a systematic language for classifying plants.
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