Relating to, resembling, or containing bran or a bran-like substance; having the nature of furfur.
From Latin 'furfur' (bran) + suffix '-ous' (full of). This medical and botanical term dates to classical Latin when physicians described skin conditions with bran-like flaking.
Doctors still use 'furfuraceous' (a related word) to describe dandruff and certain skin diseases that look like scattered bran—it's a 2,000-year-old word that explains exactly what you're seeing under the microscope.
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