acid oxide

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ac·id ox·ide

an acid anhydride; an oxide of an electronegative element or radical; it can combine with water to form an acid.
References in periodicals archive ?
The exchange reactions may take place between the basic and amphoteric oxides since the acid oxides can form with the basic oxides the same complex compounds which are difficult to disrupt (4), (5).
This ratio determines the amount of the basic and amphoteric oxides in relation to the acid oxides and enables the formation of free oxygen ions or prevents this formation.