iodine
//ˈaɪ.ə.daɪn//
Noun
1
A chemical element (symbol I, atomic number 53) that is a dark purple-gray nonmetallic solid, used in medicine as an antiseptic and in photography.
The nurse applied iodine to the wound to prevent infection.
2
A solution of iodine in alcohol, used as an antiseptic for wounds and skin disinfection.
The nurse applied iodine to the cut to prevent infection.