thallium
/ˈθæliəm/
thallium noun: a metallic chemical element (symbol Tl) with atomic number 81: a gray post-transition metal that discolors when exposed to air.
Noun
thallium (countable and uncountable, plural thalliums)
- A metallic chemical element (symbol Tl) with atomic number 81: a gray post-transition metal that discolors when exposed to air.
- Environmental authorities in Lüeyang County, Shaanxi province, discovered excessive levels of thallium in two of the Jialing River’s upstream tributaries on Jan. 20, according to a statement Monday. The concentration of thallium that day was 170% higher than the standard for Qingni River, one of...2021 January 27, Li You, “Northwest China Reports Thallium Pollution in Yangtze Tributary”, in Bibek Bhandari, editor, Sixth Tone, archived from the original on 27 Jan 2021
- An atom of this element.
thallium meaning in Hindi, Tamil, Arabic and Malay
thallium in Hindi
- chemical element
- सिक्ष्यातु sikṣyātu
thallium in Tamil
- chemical element
- தல்லியம் talliyam
thallium in Arabic
- chemical element
- ثَالِيُوم ṯāliyūm
thallium in Malay
- chemical element
- talium
More languagesFewer languages
- thallium in Thai
- แทลเลียม tɛɛl-lîiam
- thallium in Vietnamese
- tali
Forms of thallium
| plural | thalliums |
|---|
Origin of thallium
Coined based on Ancient Greek θαλλός (thallós, “green branch”) (after the color of the radiation spectra), + -ium.
Words formed from thallium
- dithallium
- eka-thallium
- nonthallium
- organothallium
- radiothallium
- thallane
- thallic
- thalliferous
- thallious
- thallium-activated
- thallium glass
- thallium green
- thallium hydroxide
- thallium line
- thallium monofluoride
- thallium monoxide
- thallium oxide
- thallium sulfate
- thallium sulphate
- thallium sulfide
- thallium sulphide
- thallium trioxide
- thalloan
- thallous
- thall-
- thallo-
- trithallium
Words that rhyme with thallium
Questions about thallium
- What does thallium mean?
- Thallium means a metallic chemical element (symbol Tl) with atomic number 81: a gray post-transition metal that discolors when exposed to air.
- What is thallium in Hindi?
- Thallium in Hindi is सिक्ष्यातु (sikṣyātu). See Thallium meaning in Hindi.
- What part of speech is thallium?
- Thallium is a noun.
- How do you pronounce thallium?
- Thallium is pronounced /ˈθæliəm/.
- What is the plural of thallium?
- The plural of thallium is thalliums.
Words near thallium in the dictionary
Source and license
Adapted from Wiktionary: thallium (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)-Vininn126-thallium.wav, LL-Q1860 (eng)-Tesco250-thallium.wav.
Cite this entry: “thallium.” Word.ws, https://word.ws/thallium. Based on Wiktionary, CC BY-SA 4.0.