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amide
This term describes a specific chemical structure characterized by a carbonyl group linked to a nitrogen atom. It carries a technical, scientific connotation and is almost exclusively used in chemistry, biochemistry, and materials science contexts. In practical application, amides are the structural foundation of proteins and nylon. While similar to esters, amides are generally more stable and resistant to hydrolysis, making them ideal for building durable biological tissues and synthetic polymers.
Countable when referring to a specific chemical species or molecule (an amide). Uncountable when referring to the general class of chemical compounds.