protoxide
Definitions
Any of a series of oxides of a particular metal that has the fewest atoms of oxygen per molecule
Examples
“Oxygen frequently combines in various proportions with a substance, rendering it an oxide, but without advancing it to the state of an acid. In order⟳ to distinguish each compound thus formed, the language of chemistry is very systematic. The first is called a protoxide; the second a deutoxide; and the third, a paroxide.”
CEFR level
B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
This word is part of the CEFR B2 vocabulary — upper intermediate level.
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