A reaction vessel in which nitration takes place(noun)
A device for spreading nitrate fertilizer on the soil(noun)
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Use "nitrator" in a sentence
"The air is used to regulate the temperature, so if there is a sudden jump in temperature, then give the nitrator as much air as you safely can."
"The construction of this nitrator is essentially the same as in the larger one, the shape only being somewhat different."
"The water is added slowly through the separator cylinder, and the contents of the nitrator air-stirred, but not cooled, the temperature being allowed to rise slowly and regularly as the water is added -- usually about 3° C. for each per cent. of water added."