iodine
/ˈaɪ.əˌdaɪn, -dɪn, -diːn/
A chemical element recognized primarily by its distinct deep purple vapor and its critical role in human thyroid health. In common parlance, it is most strongly associated with medical first aid. When used in a medical context, it carries a connotation of sterility and urgency, specifically as an antiseptic for cleaning wounds to prevent infection. Unlike other chemical elements that are discussed in abstract scientific terms, iodine has a practical, 'household' feeling due to the ubiquitous presence of tincture of iodine in first-aid kits.
💬Casual Conversation
Hey, did you put any iodine on that cut?
Nah, just ran it under water. Iodine stings like crazy.
Meanings
A nonmetallic chemical element of group 17, a halogen, which is a bluish-black solid that sublimates into a purple vapor.
"The chemist added a few drops of iodine to the solution to test for starch."
A tincture or solution of iodine used as an antiseptic for treating wounds.
"The nurse applied iodine to the scrape to prevent infection."
Collocations & Compounds
iodine tincture
A solution of iodine in alcohol, used as an antiseptic.
Apply iodine tincture to the wound to prevent infection.
iodine deficiency
A lack of sufficient iodine in the diet, which can lead to health problems.
Iodine deficiency is a major cause of preventable brain damage worldwide.
iodine tablets
Pills containing a specific dose of iodine, often used for thyroid protection.
During a nuclear emergency, it is recommended to take iodine tablets.
iodine vapor
The gaseous form of iodine, which has a distinct purple color.
The air in the laboratory was thick with iodine vapor.
iodine solution
A liquid mixture where iodine is dissolved in another substance.
The chemist prepared a fresh iodine solution for the experiment.
Etymology
The word 'iodine' comes from the Greek word 'ioeides', meaning 'violet-colored', referring to the color of iodine vapor. It was discovered in 1811 by French chemist Bernard Courtois, who noticed the violet fumes when he added sulfuric acid to the ash of seaweed. The element was later named by Humphry Davy.