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BNC: 30853 COCA: 43135

thallium

Word family
thal·li·um /ˈθæliəm/ noun [uncountableU]  
a soft blue-white metal that is poisonous, used in photoelectric cells and to kill rats, mice, and insects. It is a chemical element: symbol Tl 铊〔一种化学元素,符号为Tl
Examples from the Corpus
Origin thallium
(1800-1900) Modern Latin Greek thallos new green plant part; because it has a bright green line in its spectrum
thal·li·um noun
Chinese
Syllable
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