名词
1. 血统;家世
If you say, for example, that someone is of French extraction, you mean that they or their family originally came from France.
1. the action of taking out something (especially using effort or force)
e.g. the dentist gave her a local anesthetic prior to the extraction
2. properties attributable to your ancestry
e.g. he comes from good origins
3. the process of obtaining something from a mixture or compound by chemical or physical or mechanical means