thallium


Also found in: Thesaurus, Medical, Financial, Acronyms, Encyclopedia, Wikipedia.

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
References in periodicals archive ?
In parallel studies of heavy metals in humans (Pilot Studies 1 and 2), subjects exhibiting high urine thallium were found to be high consumers of some of the foods testing high in thallium, particularly cruciferous vegetables.
Repeated surveillance of exposure to thallium in a population living in the vicinity of a cement plant emitting dust containing thallium.
Although this investigation did not reveal health problems caused by other toxic metals, the elevated levels of arsenic and thallium could have presented health risks if these medications had been consumed for prolonged periods.
A number of patients visit this hospital for different scans like liver, heart scan, thyroid, bones, renal and thallium heart etc.
In Zhu's case, her roommate, Sun Wei, was the only person who had access to the deadly thallium chemical.
There are also toxic elements like lead, arsenic, selenium, mercury, cadmium, chromium, thallium, and finally uranium and thorium.
Atomic weights for hydrogen, lithium, boron, carbon, nitrogen, oxygen, silicon, sulfur, chlorine and thallium will now be stated as intervals, with an upper and lower bound (see thallium ABOVE).
Via radioactive decay, the thallium isotope transforms into the 180 isotope
Patients who tested positive were asked to undergo exercise thallium scintigraphy or a coronary CT scan.
Crooks is known for discovering thallium, inventing the radiometer, experimenting with cathode rays using the Crookes tube, predicting that mankind would starve unless science removed the excess nitrogen from the atmosphere, and being interested in spiritualism.
A thallium stress test was normal, so my doctor is taking a wait-and-see attitude.