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Tl

   Also found in: Medical, Acronyms, Encyclopedia, Wikipedia, Hutchinson 0.06 sec.
Tl
The symbol for the element thallium.
Tl Chem thallium
Tl
The symbol for thallium.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.TlTl - 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
atomic number 81, thallium
metal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
blende, sphalerite, zinc blende - an ore that is the chief source of zinc; consists largely of zinc sulfide in crystalline form
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