ox‧ide /ˈɒksaɪd $ ˈɑːk-/
noun [uncountable and countable][
Date: 1700-1800;
Language: French;
Origin: oxygène 'oxygen' + acide 'acid']
a substance which is produced when a substance is combined with oxygen:
iron oxide [TahlilGaran] Dictionary of Contemporary English ▲