iodine.
1. m. chemical element of no. atóm. 53. Relatively low in the Earth's crust, is mainly in the nitrate of Chile in the water of the sea, concentrated in certain seaweed and is part of the structure of thyroid hormones. Colour violet blue and very reactive, it sublimates easily shedding blue vapours and pungent odor; It is used as a dye, as a reagent in chemistry and photography, and in medicine as a disinfectant. (Símb.) I).
