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1. A disease caused by deficiency of niacin or tryptophan (or by a defect in the metabolic conversion of tryptophan to niacin); characterized by gastrointestinal disturbances and erythema and nervous or mental disorders; may be caused by malnutrition or alcoholism or other nutritional impairments
   - pellagra, Alpine scurvy, mal rosso, maidism, mayidism, Saint Ignatius' itch

1. Large genus of erect or climbing prickly shrubs including roses
   - genus Rosa

1. In secret or covertly
   "held a meeting sub rosa to avoid general criticism"

Derived forms: Rosas

Type of: avitaminosis, hypovitaminosis, rosid dicot genus

Part of: family Rosaceae, Rosaceae, rose family

Encyclopedia: Rosa, Al Rosa, AL Rosa Rosa, Salvatore Rosa, Germany Rosa, Alabama