n. The act of extracting.n. The operation of drawing anything from a substance, as an essence, tincture, or the like.n. The act of taking out or copying a part, as a passage from a book.n. In arithmetic and algebra, the rule or operation of finding the root of a given number or quantity. See root.n. That which is extracted; extract; essence.n. Descent; lineage; birth; derivation of persons from a stock or family.n. The production of segregated descendants by Mendelian hybrids.