pel·lag·ra (pə-lăgrə, -lāgrə, -lä-)
A disease caused by a deficiency of niacin and protein in the diet and characterized by skin eruptions, digestive and nervous system disturbances, and eventual mental deterioration.
[Italian : pelle, skin (from Latin pellis; see pel-3 in the Appendix of Indo-European roots) + -agra, a seizure (from Latin, from Greek -agrā, from agrā, a seizing; see ag- in the Appendix of Indo-European roots).]
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Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
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