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selenium
Definition
Selenium is a chemical element with the symbol Se and atomic number 34. It is a non-metal that is commonly found in the Earth's crust. Selenium is important for humans and animals because it helps to protect cells from damage.
Selenium is found in many foods, including seafood, meat, eggs, and dairy products. It is also added to some foods, such as bread and breakfast cereals.
Selenium deficiency can cause a number of health problems, including hair loss, fatigue, and muscle weakness. Selenium toxicity is rare, but it can cause hair loss, nausea, and vomiting.
How can the word be used?
Selenium is found in the Earth's crust.
Different forms of the word
Noun:
- a chemical element with the symbol Se and atomic number 34.
Etymology
The word "selenium" comes from the Greek word "selene", which means "moon".
The first recorded use of the word "selenium" in English was in 1818.
The word "selenium" is a Greek word, and it is not related to any other languages.
Question
Where might you find selenium?