thallium

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thal·li·um

 (thăl′ē-əm)
n. Symbol Tl
A soft, malleable, highly toxic metallic element, used in photocells, infrared detectors, low-melting glass, and formerly in rodent and ant poisons. A radioactive isotope, Tl-201, is used in medical imaging. Atomic number 81; atomic weight 204.38; melting point 304°C; boiling point 1,473°C; specific gravity 11.85 (20°C); valence 1, 3. See Periodic Table.

[thall(o)- (from its green spectral line) + -ium.]

thallium

(ˈθælɪəm)
n
(Elements & Compounds) a soft malleable highly toxic white metallic element used as a rodent and insect poison and in low-melting glass. Its compounds are used as infrared detectors and in photoelectric cells. Symbol: Tl; atomic no: 81; atomic wt: 204.3833; valency: 1 or 3; relative density: 11.85; melting pt: 304°C; boiling pt: 1473±10°C
[C19: from New Latin, from Greek thallos a green shoot; referring to the green line in its spectrum]

thal•li•um

(ˈθæl i əm)

n.
a soft, malleable, rare, bluish white metallic element: used in the manufacture of alloys and, in the form of its salts, in rodenticides. Symbol: Tl; at. wt.: 204.37; at. no.: 81; sp. gr.: 11.85 at 20°C.
[1861; < Greek thall(ós) green stalk + -ium2; after the green line in its spectrum]

thal·li·um

(thăl′ē-əm)
Symbol Tl A soft, easily shaped, very poisonous metallic element that has a low melting temperature. It is used in photography, in making low-melting and highly refractive glass, and in treating skin infections. Atomic number 81. See Periodic Table.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.thallium - a soft grey malleable metallic element that resembles tin but discolors on exposure to airthallium - 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
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
Translations
таллий
thallium
thallium
talio
tallium
tallium
תליום
talij
tallium
þallín
タリウム
thallium
talis
thallium
tal
taliu
thallium
talij
tallium
talyum
tali

thallium

[ˈθælɪəm] Ntalio m

thallium

n (Chem) → Thallium nt

thallium

n talio