protoxide

American  

[proh-tok-sahyd, -sid] / proʊˈtɒk saɪd, -sɪd /

Also protoxid

noun

Chemistry.

1. the one of a series of oxides having the smallest proportion of oxygen.

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protoxide British  

/ prəʊˈtɒksaɪd /

noun

1. the oxide of an element that contains the smallest amount of oxygen of any of its oxides

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Etymology

Origin of protoxide

prot- + oxide

Example Sentences

In these it finds the precise conditions required for decomposing the peroxide into oxygen and the protoxide.

From A System Of Logic, Ratiocinative And Inductive (Vol. 1 of 2) by Mill, John Stuart

Thus iron protoxide is now generally known as ferrous oxide, and iron peroxide as ferric oxide.

From Heroes of Science Chemists by Muir, M. M. Pattison (Matthew Moncrieff Pattison)

Dr. C. thinks, that one-fourth of a grain of the precipitated protoxide, as prepared by Mr. Evans, is equal to three or four grains of the blue mass.—Journ. of the Philad.

From North American Medical and Surgical Journal, Vol. 2, No. 3, July, 1826 by Bache, Franklin

The subsoil contains also a large quantity of protoxide of iron, a substance frequently found in subsoils containing much organic matter, and to which the air has imperfect access.

From Elements of Agricultural Chemistry by Anderson, Thomas

It may be here remarked, that the crenate of protoxide of iron is not unfrequently formed in considerable quantity in peat-bogs, and dissolving in the water of springs gives them a chalybeate character.

From Peat and its Uses as Fertilizer and Fuel by Johnson, Samuel W. (Samuel William)