frac·tion·al dis·til·la·tion
noun/ˌfrækʃənl dɪstɪˈleɪʃn/
/ˌfrækʃənl dɪstɪˈleɪʃn/
[uncountable] (chemistry)- the process of separating the parts of a liquid mixture by heating it. As the temperature goes up, each part in turn becomes a gas, which then cools as it moves up a tube and can be collected as a liquid.
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