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.

Noun
selenium (usually uncountable, plural seleniums)
- 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
- 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.
Forms of selenium
| plural | seleniums |
|---|
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
- diselenium
- hydroselenic acid
- metallic selenium
- nonselenium
- organoselenium
- radioselenium
- selane
- selen-
- selenate
- seleniate
- selenic acid
- selenide
- seleniferous
- selenio-
- seleno-
- selenious
- selenious acid
- selenite
- selenium cell
- selenium dioxide
- selenium eye
- selenium hexafluoride
- selenium hydride
- selenium oxide
- selenium sulfide
- selenium sulphide
- selenium yeast
- seleniuret
- seleniuretted
- selenol
- selenous
- selenyl
- selone
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
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.
