Abnormal

(ab-norf-mal). Not normal; not conformable with nature or with the general rule. A. Pigmentation, any exce , deficiency, or uncommon distribution of the natural pigment cells in the rete mucosum. Sometimes caused artificially either by mechanical means, such as tattooing, or by the reduction and deposition under the epidermis of metallic salts administered as medicine.such as nitrate of silver.