1. The result of obtaining something from a source; usually, by separating it out from other material: There were a few snippets of extractions of information that Izack managed to believe from the political conversation that he heard on TV.
2. The act of copying or removing a passage from a text: Mildred was able to get certain extractions clarifying the life of the author from his memoirs.
3. The removal of a tooth or teeth: Sally had to go to the dentist to have a dental extraction performed because of a severe case of molar decay.

Extractions of one or more teeth may be performed when a tooth is severely decayed, when an abscess has formed, or when a tooth is too badly broken to be repaired by crowning or root-canal treatment.

4. In chemistry, the separation of a substance from a mixture by dissolving one or more of the components in a solvent: There are different types of extractions, one of which is decoction, which is the removal of water-soluable drug substances by boiling them in water.
5. The ethnic origin or the original nationality of someone's ancestors: Jane's husband was of Spanish extraction.

A reduction in the volume of natural gas due to the removal of liquid constituents; such as, ethane, propane, and butane at natural gas processing plants: Extraction loss can also be explained when the amount and energy content in natural gas is decreased as a result of the deduction or withdrawal of its components.

A steam turbine in which a portion of the working fluid is tapped between stages of an expansion process and used for purposes other than generating mechanical power: The extraction turbine has provided many rooms with heating because of the devices that allow the hot vapor to be utilized.