Definition of "sensitizer" [sen•si•ti•zer]

• Any agent that sensitizes something. (noun)

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• "The sensitizer is a mixture of 90\% dark flake aluminium powder, 5\% Titanium and 5\% zirconium hydroxide."
• "Among them: danger-poison, corrosive, severely irritating, highly flammable, highly combustible or strong sensitizer."
• "“This effect suggests smoking marijuana (at least in relatively low doses) may act as a primer, or sensitizer, in the airways to amplify the adverse effects of tobacco on respiratory health,” he says."