Distillation

Noun

1. The act of falling in drops, or the act of pouring out in drops.
2. That which falls in drops.
3. The separation of more volatile parts of a substance from less volatile ones by evaporation and condensation. Purification through repeated or continuous distilling; rectification. Separation of petroleum into specific hydrocarbon groups; fractionation.
4. Purification through repeated or continuous distilling; rectification.
5. Separation of petroleum into specific hydrocarbon groups; fractionation.