Opposing or inhibiting the action of enzymes; describing substances that slow down or stop enzymatic reactions.
From anti- + enzymatic (from enzyme, from Greek en-, in, + zyme, leaven). This biochemistry term emerged with modern understanding of enzyme function.
Many poisons work antienzymatically—cyanide blocks an enzyme needed for cells to use oxygen, which is why it's so deadly and why antidotes must work incredibly fast to save someone.
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