What does colcothar mean?

Definitions for colcothar

This dictionary definitions page includes all the possible meanings, example usage and translations of the word colcothar.

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Samuel Johnson's Dictionary

  1. Colcotharnoun

    A term used in chymistry. Colcothar is the dry substance which remains after distillation, but commonly meant of the caput mortuum of vitriol. John Quincy

    Colcothar, or vitriol burnt, though unto a redness, containing the fixed salt, will make good ink. Thomas Browne, Vulg. Errours.


  1. colcothar

    Iron(III) oxide or ferric oxide is the inorganic compound with the formula Fe2O3. It is one of the three main oxides of iron, the other two being iron(II) oxide (FeO), which is rare; and iron(II,III) oxide (Fe3O4), which also occurs naturally as the mineral magnetite. As the mineral known as hematite, Fe2O3 is the main source of iron for the steel industry. Fe2O3 is readily attacked by acids. Iron(III) oxide is often called rust, and to some extent this label is useful, because rust shares several properties and has a similar composition; however, in chemistry, rust is considered an ill-defined material, described as Hydrous ferric oxide.

Webster Dictionary

  1. Colcotharnoun

    polishing rouge; a reddish brown oxide of iron, used in polishing glass, and also as a pigment; -- called also crocus Martis

  2. Etymology: [NL. colcothar vitrioli, fr. Ar. qolqoar.]

Chambers 20th Century Dictionary

  1. Colcothar

    kol′kō-thar, n. a dark-red iron peroxide formed by calcining copperas.

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  1. Chaldean Numerology

    The numerical value of colcothar in Chaldean Numerology is: 8

  2. Pythagorean Numerology

    The numerical value of colcothar in Pythagorean Numerology is: 5


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"colcothar." Definitions.net. STANDS4 LLC, 2023. Web. 29 Sep. 2023. <https://www.definitions.net/definition/colcothar>.

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    a defeat in which the losing person or team fails to score
    • A. pluck
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