Definition of Thallium in English :

Define Thallium in English

Thallium meaning in English

Meaning of Thallium in English

Pronunciation of Thallium in English

Thallium pronunciation in English

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Thallium

see synonyms of thallium

Noun

1. atomic number 81, thallium, tl

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

WordNet Lexical Database for English. Princeton University. 2010.


Thallium

see synonyms of thallium
noun
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

Collins English Dictionary. Copyright © HarperCollins Publishers


Thallium

see synonyms of thallium
noun
a rare, poisonous, bluish-gray, soft, metallic chemical element, used in making photoelectric cells, rat poisons, etc.: symbol, Tl; at. no. 81
see the periodic table of elements in the Reference Supplement

Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by Houghton Mifflin Harcourt. All rights reserved.


Thallium

see synonyms of thallium
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.

The American Heritage ® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.