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Thallium

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.

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Reviewed alternatives and contrasts

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Broader term 1

Metal 76% connected

An elementary substance, as sodium, calcium, or copper, whose oxide or hydroxide has basic rather than acid properties, as contrasted with the nonmet…

oewn 2023 0% interchangeable

Open English WordNet identifies the related term as a broader lexical category for at least one sense.

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Containing substance 2

Blende 70% connected

A mineral, called also sphalerite, and by miners mock lead, false galena, and black-jack. It is a zinc sulphide, but often contains some iron. Its co…

oewn 2023 0% interchangeable

Open English WordNet identifies the related term as a containing group, substance or whole.

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Sphalerite 70% connected

Zinc sulphide; -- called also blende, black-jack, false galena, etc. See Blende (a).

oewn 2023 0% interchangeable

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Words from the same subject

These terms belong to the same specialist field or topic. They help you explore the subject, but they are not automatically synonyms.

Complex noun · 85% connection

a compound described in terms of the central atom to which other atoms are bound or coordinated

Used in the same subject area: Inorganic chemistry, Chemistry, General chemistry.
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Coordination compound noun · 85% connection

a compound described in terms of the central atom to which other atoms are bound or coordinated

Used in the same subject area: Inorganic chemistry, Chemistry, General chemistry.
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Organometallic compound noun · 85% connection

a compound containing an alkyl or aryl radical bonded to a metal.; "Tetracarbonyl nickel, and ferrocene are examples of organometallic…

Used in the same subject area: Inorganic chemistry, Chemistry, General chemistry.
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Metallic element noun · 85% connection

any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.

Used in the same subject area: Inorganic chemistry, Chemistry, General chemistry.
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Hydrochloride noun · 84% connection

a complex consisting of an organic base in association with hydrogen chloride

Used in the same subject area: Inorganic chemistry, Chemistry, General chemistry.
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Al noun · 84% connection

a silvery ductile metallic element found primarily in bauxite

Used in the same subject area: Inorganic chemistry, Chemistry, General chemistry.
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Aluminium noun · 84% connection

a silvery ductile metallic element found primarily in bauxite

Used in the same subject area: Inorganic chemistry, Chemistry, General chemistry.
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Aluminum noun · 84% connection

a silvery ductile metallic element found primarily in bauxite

Used in the same subject area: Inorganic chemistry, Chemistry, General chemistry.
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Am noun · 84% connection

a radioactive transuranic metallic element; discovered by bombarding uranium with helium atoms

Used in the same subject area: Inorganic chemistry, Chemistry, General chemistry.
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Antimony noun · 84% connection

a metallic element having four allotropic forms; used in a wide variety of alloys; found in stibnite

Used in the same subject area: Inorganic chemistry, Chemistry, General chemistry.
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Atomic number 11 noun · 84% connection

a silvery soft waxy metallic element of the alkali metal group; occurs abundantly in natural compounds (especially in salt water); bur…

Used in the same subject area: Inorganic chemistry, Chemistry, General chemistry.
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Atomic number 19 noun · 84% connection

a light soft silver-white metallic element of the alkali metal group; oxidizes rapidly in air and reacts violently with water; is abun…

Used in the same subject area: Inorganic chemistry, Chemistry, General chemistry.
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Ba noun · 84% connection

a soft silvery metallic element of the alkali earth group; found in barite

Used in the same subject area: Inorganic chemistry, Chemistry, General chemistry.
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Barium noun · 84% connection

a soft silvery metallic element of the alkali earth group; found in barite

Used in the same subject area: Inorganic chemistry, Chemistry, General chemistry.
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Be noun · 84% connection

a light strong brittle grey toxic bivalent metallic element

Used in the same subject area: Inorganic chemistry, Chemistry, General chemistry.
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Beryllium noun · 84% connection

a light strong brittle grey toxic bivalent metallic element

Used in the same subject area: Inorganic chemistry, Chemistry, General chemistry.
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Bismuth noun · 84% connection

a heavy brittle diamagnetic trivalent metallic element (resembles arsenic and antimony chemically); usually recovered as a by-product…

Used in the same subject area: Inorganic chemistry, Chemistry, General chemistry.
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Cadmium noun · 84% connection

a soft bluish-white ductile malleable toxic bivalent metallic element; occurs in association with zinc ores

Used in the same subject area: Inorganic chemistry, Chemistry, General chemistry.
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Words connected by meaning

Their definitions overlap or refer to similar ideas. Use these to widen your search, then compare the exact meanings.

Alum noun · 78% connection

A double sulphate formed of aluminium and some other element (esp. an alkali metal) or of aluminium. It has twenty-four molecules of w…

Its definition shares important concepts with this word: rare, metallic, element, aluminium, group.
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Chamber noun · 78% connection

A compartment or cell; an inclosed space or cavity; as, the chamber of a canal lock; the chamber of a furnace; the chamber of the eye.

Its definition shares important concepts with this word: rare, metallic, element, aluminium, group.
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Gallium noun · 78% connection

A rare metallic element, found in certain zinc ores. It is white, hard, and malleable, resembling aluminium, and remarcable for its lo…

Its definition shares important concepts with this word: rare, metallic, element, aluminium, group.
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Glucinum noun · 78% connection

A rare metallic element, of a silver white color, and low specific gravity (2.1), resembling magnesium. It never occurs naturally in t…

Its definition shares important concepts with this word: rare, metallic, element, aluminium, group.
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Helium noun · 78% connection

A gaseous element found in the atmospheres of the sun and earth and in some rare minerals.

Its definition shares important concepts with this word: rare, metallic, element, aluminium, group.
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Ho noun · 78% connection

a trivalent metallic element of the rare earth group; occurs together with yttrium; forms highly magnetic compounds

Its definition shares important concepts with this word: rare, metallic, element, aluminium, group.
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Holmium noun · 78% connection

a trivalent metallic element of the rare earth group; occurs together with yttrium; forms highly magnetic compounds

Its definition shares important concepts with this word: rare, metallic, element, aluminium, group.
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Indium noun · 78% connection

A rare metallic element, discovered in certain ores of zinc, by means of its characteristic spectrum of two indigo blue lines; hence,…

Its definition shares important concepts with this word: rare, metallic, element, aluminium, group.
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Iridium noun · 78% connection

A rare metallic element, of the same group as platinum, which it much resembles, being silver-white, but harder, and brittle, and indi…

Its definition shares important concepts with this word: rare, metallic, element, aluminium, group.
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La noun · 78% connection

a white soft metallic element that tarnishes readily; occurs in rare earth minerals and is usually classified as a rare earth

Its definition shares important concepts with this word: rare, metallic, element, aluminium, group.
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Lanthanum noun · 78% connection

A rare element of the group of the earth metals, allied to aluminium. It occurs in certain rare minerals, as cerite, gadolinite, orthi…

Its definition shares important concepts with this word: rare, metallic, element, aluminium, group.
Definition Compare
Lav/sium noun · 78% connection

A supposed new metallic element. It is said to have been discovered in pyrites, and some other minerals, and to be of a silver-white c…

Its definition shares important concepts with this word: rare, metallic, element, aluminium, group.
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