Definitions for: Thallium

[n] a soft gray 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

Webster (1913) Definition: Thal"li*um, n. [NL., fr. Gr. ? young or green shoot
or branch, twig. So called from a characteristic bright green
line in its spectrum.] (Chem.)
A rare metallic element of the aluminium group found in some
minerals, as certain pyrites, and also in the lead-chamber
deposit in the manufacture of sulphuric acid. It is isolated
as a heavy, soft, bluish white metal, easily oxidized in
moist air, but preserved by keeping under water. Symbol Tl.
Atomic weight 203.7.

Synonyms: atomic number 81, Tl

See Also: blende, metal, metallic element, sphalerite, zinc blende

Try our:
Scrabble Word Finder

Scrabble Cheat

Words With Friends Cheat

Hanging With Friends Cheat

Scramble With Friends Cheat

Ruzzle Cheat

Related Resources:
m letter animals
animals starting with u