1 [U,C] the act or process of removing or obtaining sth from sth else:
oil / mineral / coal extraction * the extraction of salt from the sea * Commercial peat extraction is destroying many threatened habitats. * Methods of extraction vary from mine to mine.
2 [U] of...extraction (formal) having a particular family origin:
an American of Hungarian extraction
3 [C] (technical) the removal of a tooth:
I didn't like having my teeth drilled but extractions were infinitely worse.
