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

This was the impure protoxide of zinc deposited in the furnace outlets, and is modern "tutty."

From De Re Metallica, Translated from the First Latin Edition of 1556 by Agricola, Georgius

In the case of vitriol peats, carbonate of lime is the cheapest and most appropriate means of destroying the noxious sulphate of protoxide of iron, and correcting their deleterious quality.

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

What is the difference between the peroxide and the protoxide of iron?

From The Elements of Agriculture A Book for Young Farmers, with Questions Prepared for the Use of Schools by Waring, George E. (George Edwin)

Chrysocolla, kris-ō-kol′a, n. a silicate of protoxide of copper, bluish-green.

From Chambers's Twentieth Century Dictionary (part 1 of 4: A-D) by Various

Copper forms two oxides, the suboxide and the protoxide; the suboxide colours glass red, while the protoxide renders it green.

From British Manufacturing Industries Pottery, Glass and Silicates, Furniture and Woodwork. by Arnoux, L.