Thorium Definition

thôrē-əm
noun
A rare, grayish, radioactive, metallic chemical element, one of the actinides, found in monazite and thorite: it is used in magnesium alloys, the making of gas mantles, electronic equipment, etc., and as a nuclear fuel: symbol, Th; at. no. 90
Webster's New World
Synonyms:
  • atomic number 90
  • th

Origin of Thorium

  • After Thor

    From American Heritage Dictionary of the English Language, 5th Edition

  • After Thor.

    From Wiktionary

Thorium Sentence Examples

  • With Three Hours' Exposure He Found The Thorium Emanation Only From 3 To 5% Of The Whole, But With 12 Hours' Exposure The Percentage Of Thorium Emanation Rose To About 15.

  • In two cases, however, it has been found in the absence of appreciable quantities of uranium and thorium compounds, namely in beryl, and in sylvine (potassium chloride).

  • In 1824 he obtained zirconium from potassium zirconium fluoride; the preparation of (impure) titanium quickly followed, and in 1828 he obtained thorium.

  • In its chemical relations, titanium is generally tetravalent, and occurs in the same sub-group of the periodic classification as zirconium, cerium and thorium.

  • Within these limits are to be found most of the minerals known - gold, silver, quicksilver, copper, lead, zinc, iron, manganese, wolfram, bismuth, thorium, vanadium; mica, coal, &c. On or near the coast are coal, salt, sulphur, borax, nitrates and petroleum.

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Words Starting With

TTHTHO

Words Ending With

MUMIUM

Unscrambles

thorium

Words Starting With T and Ending With M

Starts With T & Ends With MStarts With TH & Ends With MStarts With T & Ends With UM

Word Length

7 Letter Words7 Letter Words Starting With T7 Letter Words Ending With M