selenium
A nonmetallic chemical element with an atomic number of 34, used mainly in glassmaking…A nonmetallic chemical element (symbol Se) with an atomic number of 34, used mainly in glassmaking and pigments and as a semiconductor.
» Hydrogen, carbon, nitrogen, phosphorus, oxygen, sulfur and selenium are nonmetals.
Водород, углерод, азот, фосфор, кислород, сера и селен являются неметаллами.
Водень, вуглець, азот, фосфор, кисень, сіра та селен є неметалами.
Meaning
2 senses(uncountable, usually)A nonmetallic chemical element (symbol Se) with an atomic number of 34, used mainly in glassmaking and pigments and as a semiconductor.
Selen
селе́нselén
селе́нselén
(uncountable, usually)An atom of this element.
- a toxic nonmetallic element related to sulfur and tellurium; occurs in several allotropic forms; a stable grey metallike allotrope conducts electricity better in the light than in the dark and is used in photocells; occurs in sulfide ores (as pyrite)
Examples
1 sentencesHydrogen, carbon, nitrogen, phosphorus, oxygen, sulfur and selenium are nonmetals.
Водень, вуглець, азот, фосфор, кисень, сіра та селен є неметалами.
ruВодород, углерод, азот, фосфор, кислород, сера и селен являются неметаллами.
Translations
9 languagesBy meaning 1
By meaning 1
By meaning 1
Origin
From French sélénium, the name coined by Swedish chemist Jöns Jacob Berzelius in 1818 fromFrom 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.
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Forms
plural: seleniums| Singular | selenium |
|---|
uncountable
Synonyms
2 synonyms- a toxic nonmetallic element related to sulfur and tellurium; occurs in several allotropic forms; a stable grey metallike allotrope conducts electricity better in the light than in the dark and is used in photocells; occurs in sulfide ores (as pyrite):Seatomic number 34
Word family
21 related wordsLessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable