thallium — meaning in English
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English meaning
- thallium noun A soft, gray metallic chemical element (symbol Tl, atomic number 81) that tarnishes quickly in air and is highly toxic.
Senses
thallium is used for these senses in English:
- thallium A metallic chemical element (symbol Tl) with atomic number 81: a gray post-transition metal that discolors when exposed to air.