Thallium — synonyms, definition

1. thallium (Noun)

2 synonyms
Tl atomic number 81
1 definition

thallium (Noun) — A soft grey malleable metallic element that resembles tin but discolours on exposure to air; it is highly toxic and is used in rodent and insect poisons; occurs in zinc blende and some iron ores.

2 types of
metal metallic element
3 parts of
Blende sphalerite zinc blende