the one of a series of oxides having the smallest proportion of oxygen.
- Also pro·tox·id [proh-tok-sid]. /proʊˈtɒk sɪd/.
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How to use protoxide in a sentence
The ferruginous bacteria (leptothrix ochrocea) store up oxyhydrate of iron (by the oxydation of carbonic protoxide of iron).The Wonders of Life | Ernst Haeckel
This arises from the peroxidation of the iron, to whose protoxide they owe their tint.
They are red, lamellated, very heavy, and closely resemble protoxide of copper.
They consist of silicate of alumina, of lime, protoxide of iron; the red contain some silicate of copper.
When the metal is very pure and free from protoxide, these cakes may be obtained very thin, one 24th of an inch for example.
British Dictionary definitions for protoxide
the oxide of an element that contains the smallest amount of oxygen of any of its oxides
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