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.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

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]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

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.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005

thallium

n (Chem) → Thallium nt
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007

thallium

n talio
English-Spanish/Spanish-English Medical Dictionary Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
References in periodicals archive ?
(1,2,5) By contrast, nuclear imaging with thallium-201 and I-123-BMIPP (to determine perfusion-metabolism mismatch) was informative despite the relatively small amount of infarction and the uncommon site limited to the mid-septum.
Effects of myocardial perfusion abnormalities on the accuracy of left ventricular volume and ejection fraction measured by thallium-201 gated single-photon emission tomography: comparison with echocardiography as the reference standard.
Serrana Junior et al., "Slow coronary runoff in patient with angina pectoris: clinical significance and thallium-201 scintigraphic study," Brazilian Journal of Medical and Biological Research, vol.
Magnetic resonance imaging, thallium-201 SPET scanning, and laboratory analyses for discrimination of cerebral lymphoma and toxoplasmosis in AIDS.
Liver scan, thyroid scan and thallium heart scan, moreover, the pharmaceuticals used for these techniques were MIBI (Methoxy-Isobutyl-Isonitrile), MDP (methylene diphosphonate), DTPA (diethylenetriaminepentaacetic acid), Phytate, Plane Tc-99m (technetium 99m) and Thallium-201, respectively.
* Thallium-201, and technetium-99m radiolabelled lipophilic compounds such as sestamibi and tetrofosmin--most commonly used for MPI SPECT.
Diagnosis of cardiac sarcoidosis is possible by the electrocardiographic, echocardiographic and radionuclide investigations (Gadolinium MRI exam), while the gallium-67 citrate (Ga) or Thallium-201 scintigraphy are normally used to assess the activity of the disease and the response to the corticosteroid therapy [11-13].
When technetium--the gold standard for such heart studies--is in critically tight supply, as it now is in Divgi's hospital, physicians have been substituting a much older procedure that uses thallium-201.
Ribose facilitates thallium-201 redistribution in patients with coronary artery disease.