The quality or state of being foliaceous; the degree to which something resembles or has leaf-like characteristics.
Formed from 'foliaceous' plus the English suffix '-ness,' which converts adjectives into abstract nouns describing qualities or states.
This is one of those beautifully technical words that scientists use when they need to describe exactly how leaf-like something really is—perfect for when 'leafiness' just isn't scientific enough!
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