Word.ws English Dictionary

selenium

/sɪˈliːni.əm/

selenium noun: a nonmetallic chemical element (symbol Se) with an atomic number of 34, used mainly in glassmaking and pigments and as a semiconductor.

selenium: a nonmetallic chemical element (symbol Se) with an atomic number of 34, used mainly in glassmaking...
Image: de:Tomihahndorf, Public domain, via Wikimedia Commons

Noun

selenium (usually uncountable, plural seleniums)

  1. (usually) A nonmetallic chemical element (symbol Se) with an atomic number of 34, used mainly in glassmaking and pigments and as a semiconductor.
    • Pluck almost any cell from your body and it will have a million or more selenium atoms in it.2019, Bill Bryson, The Body: A Guide for Occupants, Black Swan (2020), page 4
  2. (usually) An atom of this element.

selenium meaning in Hindi, Tamil, Tagalog and Arabic

selenium in Hindi

chemical element
मेचाग्नि mecāgni

selenium in Tamil

chemical element
செங்கந்தகம் ceṅkantakam

selenium in Tagalog

chemical element
selenyo

selenium in Arabic

chemical element
سِيلِينِيُوم sīlīniyūm
More languagesFewer languages
selenium in Malay
selenium
selenium in Thai
ซีลีเนียม sii-lii-nîiam

Examples of selenium in a sentence

  • The culture medium was inoculated with selenium to investigate the rate of uptake.
  • No selenium, no photo-cell banks. No photobanks – well, death by slow broiling is one of the more unpleasant ways of being done in.
  • Selenocarbonyl compounds are the selenium analogs of carbonyl compounds having a carbon-selenium double bond.

All 11 example sentences with selenium

Forms of selenium

pluralseleniums

Origin of selenium

From French sélénium, the name coined by Swedish chemist Jöns Jacob Berzelius in 1818 from Ancient Greek σελήνη (selḗnē, “moon”) in reference to original confusion with the similar element tellurium.

Words formed from selenium

Phrases with selenium

Words that rhyme with selenium

Questions about selenium

What does selenium mean?
Selenium means a nonmetallic chemical element (symbol Se) with an atomic number of 34, used mainly in glassmaking and pigments and as a semiconductor.
What is selenium in Hindi?
Selenium in Hindi is मेचाग्नि (mecāgni). See Selenium meaning in Hindi.
What part of speech is selenium?
Selenium is a noun.
How do you pronounce selenium?
Selenium is pronounced /sɪˈliːni.əm/ (UK).
What is the plural of selenium?
The plural of selenium is seleniums.

Words near selenium in the dictionary

  1. selenites
  2. selenitian
  3. selenitic
  4. selenitical
  5. selenitiferous
  6. selenium
  7. selenium cell
  8. selenium dioxide
  9. selenium eye
  10. selenium eyes
  11. selenium hexafluoride

Source and license

Adapted from Wiktionary: selenium (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Naomi Persephone Amethyst (NaomiAmethyst)-selenium.wav, LL-Q1860 (eng)-Vealhurl-selenium.wav.

Cite this entry: “selenium.” Word.ws, https://word.ws/selenium. Based on Wiktionary, CC BY-SA 4.0.