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Thorium

A metallic element found in certain rare minerals, as thorite, pyrochlore, monazite, etc., and isolated as an infusible gray metallic powder which burns in the air and forms thoria; -- formerly called also thorinum. Symbol Th. Atomic weight 232.0.

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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

Monazite 70% connected

A mineral occurring usually in small isolated crystals, -- a phosphate of the cerium metals.

oewn 2023 0% interchangeable

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

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Thorite 70% connected

A mineral of a brown to black color, or, as in the variety orangite, orange-yellow. It is essentially a silicate of thorium.

oewn 2023 0% interchangeable

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

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Synonym 1

Th 92% connected

In Old English, the article the, when the following word began with a vowel, was often written with elision as if a part of the word. Thus in Chaucer…

oewn 2023 68% interchangeable

Open English WordNet places these words in at least one shared synset. They share a lexicalised sense, but context, register and collocation should still be checked before substitution.

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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.

Davyum noun · 78% connection

A rare metallic element found in platinum ore. It is a white malleable substance. Symbol Da. Atomic weight 154.

Its definition shares important concepts with this word: metallic, element, found, certain, rare.
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Didymium noun · 78% connection

A rare metallic substance usually associated with the metal cerium; -- hence its name. It was formerly supposed to be an element, but…

Its definition shares important concepts with this word: metallic, element, found, certain, rare.
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Fluorine noun · 78% connection

A non-metallic, gaseous element, strongly acid or negative, or associated with chlorine, bromine, and iodine, in the halogen group of…

Its definition shares important concepts with this word: metallic, element, found, certain, rare.
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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: metallic, element, found, certain, rare.
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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: metallic, element, found, certain, rare.
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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: metallic, element, found, certain, rare.
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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: metallic, element, found, certain, rare.
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Iodine noun · 78% connection

A nonmetallic element, of the halogen group, occurring always in combination, as in the iodides. When isolated it is in the form of da…

Its definition shares important concepts with this word: metallic, element, found, certain, rare.
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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: metallic, element, found, certain, rare.
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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: metallic, element, found, certain, rare.
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Neodymium noun · 78% connection

a yellow trivalent metallic element of the rare earth group; occurs in monazite and bastnasite in association with cerium and lanthanu…

Its definition shares important concepts with this word: metallic, element, found, certain, rare.
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Neptunium noun · 78% connection

A new metallic element, of doubtful genuineness and uncertain indentification, said to exist in certain minerals, as columbite.

Its definition shares important concepts with this word: metallic, element, found, certain, rare.
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