noun
- a soft, bluish-white metallic chemical element that is highly toxic and used in electronics and as a poison
Usage: chemistry
Examples
- Thallium is extremely poisonous and must be handled with great care.
- The electronics manufacturer uses thallium in specialized semiconductor devices.
- Scientists detected traces of thallium in the contaminated water supply.
- Thallium compounds were once used as rat poison before being banned.
- The periodic table shows thallium with the symbol Tl and atomic number 81.
- Industrial workers require protective equipment when handling thallium.