distillation : Idioms & Phrases

• noun heating a solid substance in a closed container and collecting the volatile products
  

WordNet

• (Chem.), the distillation, especially of complex solid substances, so that the ultimate constituents are separated or evolved in new compounds, usually requiring a high degree of heat; as, the destructive distillation of soft coal or of wood.
• . See Distillation.

Webster 1913

• the distillation of substances by themselves, or without the addition of water or of other volatile solvent; as, the dry distillation of citric acid.

Webster 1913

• noun fractionation of a liquid by distillation
  

WordNet

• (Chem.), a process of distillation so conducted that a mixture of liquids, differing considerably from each other in their boiling points, can be separated into its constituents.

Webster 1913