oxydé

Oxydé is a French term that designates a substance that has undergone oxidation. It is the past participle of the verb oxyder (to oxidize). In general, oxidation refers to an increase in oxidation state due to reaction with oxygen or another oxidant, and it often yields oxides or oxygen-containing functional groups.

In scientific use, oxydé describes metals that have formed oxides on their surface, such as iron oxides (rust) or aluminum oxide, as well as organic and inorganic compounds that have been oxidized to aldehydes, ketones, acids, or other products depending on conditions. In biology and biochemistry, oxidized species participate in redox reactions; for example, NAD+ is the oxidized form of NADH.

In materials science and industry, oxide layers can affect corrosion resistance, catalytic activity, and electronic properties. In food and nutrition, lipid oxidation produces rancidity, and products can be described as oxydés in French texts.

Etymology and usage: Oxydé comes from the verb oxyder, with -é marking the masculine singular past participle in modern French. The English equivalent is oxidized. The term is commonly found in French-language scientific literature and in bilingual texts.