iodin

iodine 

Main Entry: io·dine
Pronunciation: 'I-&-"dIn, -&d-^&n, -&-"dEn
Function: noun
often attributive 1 : anonmetallic halogen element obtained usually as heavy shining blackish gray crystals and used especially in medicine (as in antisepsis and in the treatment of goiter and cretinism) and in photographyand chemical analysis —symbol I; —see ELEMENT table
2 : a tincture of iodine usedespecially as a topical antiseptic

iodine i·o·dine (ī'ə-dīn', -dĭn, -dēn')
n.

1. 
   Symbol I A poisonous halogen element having compounds used as germicides, antiseptics, and food supplements, with radioactive isotopes, especially I 131, used in thyroid disease diagnosis and therapy. Atomic number 53; atomic weight 126.9045; melting point 113.7°C; boiling point 184.4°C; specific gravity (solid, at 20°C) 4.93; valence 1, 3, 5, 7.

2. A liquid containing iodine dissolved in ethyl alcohol, used as an antiseptic for wounds.

iodine   (ī'ə-dīn')  Pronunciation Key  Symbol I A shiny, grayish-black element of the halogen group. It is corrosive and poisonous and occurs in very small amounts in nature except for seaweed, in which it is abundant. Iodine compounds are used in medicine, antiseptics, and dyes. Atomic number 53; atomic weight 126.9045; melting point 113.5°C; boiling point 184.35°C; specific gravity (solid, at 20°C) 4.93; valence 1, 3, 5, 7. See Periodic Table.