Noun iodin has 1 sense
  1. iodine, iodin, I, atomic number 53 - a nonmetallic element belonging to the halogens; used especially in medicine and photography and in dyes; occurs naturally only in combination in small quantities (as in sea water or rocks)
    --1 is a kind of chemical element, element; halogen
    --1 is a substance of seawater, saltwater, brine
    --1 has particulars: iodine-131; iodine-125
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