Describing something that will not react.(adjective)
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Use "nonreactive" in a sentence
"The hospital said on its Web site that the mistake occurred because a staff member mistakenly believed he heard the English word "nonreactive" concerning the donor's standard H.I.V. test."
"Toss the rhubarb pieces with three quarters cup sugar and the flour in a nonreactive mixing bowl."
"The nonreactive nitrogen is meant to prevent outside air from entering the containment structures, where the air's oxygen can react explosively with the hydrogen produced by the damaged reactors."