iodine
Iodine (noun) means a chemical element, symbol I, used in medicine, photography, and as a nutrient needed by the thyroid gland. Example: “Seaweed is naturally rich in iodine.”
How to use iodine
Learner’s notesIn plain EnglishA chemical element used as an antiseptic and essential for a healthy thyroid.
Word forms
- Plural
- iodines
- Third person singular
- iodines
- Past tense
- iodined
Fill the gap
Can you complete this real example?
Seaweed is naturally rich in _____.
Etymology
From French iode, from Ancient Greek ioeidēs, "violet-coloured," describing the purple vapour the element gives off when heated. Named by the chemist Humphry Davy in 1814.