Definition of "pretreating" []

• Present participle of pretreat. (verb)

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• "Road crews in both states and the District prepared for snow as they normally do, pretreating streets with salt and, in some cases, a calcium chloride mix, intended to melt the initial snow or ice."
• "An effort to prevent the Capital Beltway from turning into a skating rink accidentally turned it into one Friday morning when a contractor pretreating the highway to melt snow mistakenly spread the wrong mixture."
• "We began pretreating a couple of days ago, and we had salt trucks out today by 10 a.m."