thallium
A metallic chemical element with atomic number 81: a gray post-transition metal that…A metallic chemical element (symbol Tl) with atomic number 81: a gray post-transition metal that discolors when exposed to air.
» Didn't they find thallium in that stuff last year?
Meaning
2 senses(countable, uncountable)A metallic chemical element (symbol Tl) with atomic number 81: a gray post-transition metal that discolors when exposed to air.
Thallium
та́ллийtállij
та́лійtálij
A metallic chemical element (symbol Tl) with atomic number 81: a gray post-transition metal that discolors when exposed to air.
(countable)An atom of this element.
- a soft grey malleable metallic element that resembles tin but discolors on exposure to air; it is highly toxic and is used in rodent and insect poisons; occurs in zinc blende and some iron ores
Examples
3 sentencesDidn't they find thallium in that stuff last year?
Thallium is a highly toxic heavy metal.
deThallium ist ein hochgiftiges Schwermetall.
In the United States, thallium has been restricted from use in rodenticides and depilatory cosmetics.
Translations
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Origin
Coined based on Ancient Greek θαλλός (thallós, “green branch”) (after the color of the radCoined based on Ancient Greek θαλλός (thallós, “green branch”) (after the color of the radiation spectra), + -ium.
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Forms
plural: thalliumsSynonyms
2 synonyms- a soft grey malleable metallic element that resembles tin but discolors on exposure to air; it is highly toxic and is used in rodent and insect poisons; occurs in zinc blende and some iron ores:Tlatomic number 81
Word family
15 related wordsLessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable