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lactam Definition

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lactam
noun(lac-tam)
any of a class of amides of amino carboxylic acids that are formed by the loss of a molecule of water from the amino and carboxyl groups, that are characterized by the carbonyl-imido group —CONH— in a ring, and that include many antibiotics
lactam
noun(lac-tam)
any of a large class of natural and semisynthetic antibiotics (as the penicillins and cephalosporins) with a lactam ring

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