noun

• The act of falling in drops, or the act of pouring out in drops.
• That which falls in drops.
• (chemistry, chemical engineering) The separation of more volatile parts of a substance from less volatile ones by evaporation and condensation.
• Purification through repeated or continuous distilling; rectification.
• (petrochemistry) Separation of petroleum into specific hydrocarbon groups; fractionation.
• The substance extracted by distilling.