A type of organic chemical compound containing a carbon atom bonded to an oxygen atom and a hydrogen atom, often created during fermentation or oxidation processes.
From German Aldehyd, coined in 1835 by Justus von Liebig, combining alcohol + dehydrogenatum (dehydrogenated); it literally means alcohol that has lost hydrogen atoms.
Formaldehyde (used in medical labs) and vanillin (which makes vanilla taste like vanilla) are both aldehydes—the same chemical structure creates both a disinfectant and a delicious flavor.
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