1. thallium

noun. ['ˈθæliːəm'] 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.

Rhymes with Thallium

• gallium

Sentences with thallium

1. Noun, singular or mass
It's worth noting that toxins such as mercury, lead and thallium can damage the kidneys; tuna and other fish can contain all three heavy metals.