A substance, device, or person that removes harmful or poisonous materials from something.
From 'decontaminate' + '-or' suffix (indicating an agent or instrument), following the pattern of English agentive nouns like 'calculator' or 'generator.'
Modern decontaminators can be surprisingly high-tech—from UV light systems that kill bacteria to nano-particles that bind to toxins—yet old-fashioned ones like soap and bleach remain the most effective everyday decontaminators.
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