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# iodine

noun (iodine, uncountable)

«iodine» in the English dictionary: everyday — its meanings, how the lessons use it, and examples, each with its tree on Mova.

## Everyday

1. (science) A chemical element (symbol I, number 53) that forms dark purple-black crystals and a violet gas when heated. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/iodine/#m1)
2. A brown liquid made with iodine that is put on cuts to kill germs. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/iodine/#m2)
3. (health) A mineral the body needs in tiny amounts to make hormones, found in fish, seaweed, milk and iodised salt. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/iodine/#m3)

### In the lessons

In science lessons it appears in the periodic table and in the starch test: iodine solution turns from orange-brown to blue-black when starch is present. In health it is a nutrient (iodised salt); in first aid an antiseptic. Phrases: iodine solution, iodine test, iodised salt.

### Examples

- We dropped iodine on the bread and it turned blue-black, so it has starch. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/iodine/#x1)
- The nurse dabbed iodine on my grazed knee. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/iodine/#x2)
- Iodine is element number 53 on the periodic table. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/iodine/#x3)
- Seaweed contains a lot of iodine. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/iodine/#x4)
- Our salt says «iodised» on the packet. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/iodine/#x5)
- When heated, iodine gives off a purple vapour. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/iodine/#x6)
- Iodine stains are hard to wash out of clothes. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/iodine/#x7)

### Note

Uncountable. Pronounced EYE-oh-deen or EYE-oh-dyne. Its symbol is a capital I (one letter). Safety: iodine solution is for use on skin or in experiments, never to drink. Adjective: iodised (UK) / iodized (US).

## On Mova

- [Trees and pragmatics of «iodine» in the school dictionary](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/iodine/): every meaning and example parsed by Mova, with its dependency tree and frames.
- [«iodine» in the school dictionary](https://mova.elamur.ai/free/en/dictionaries/school/w/iodine.html) on Mova free.